diff --git a/lib/subghz/protocols/protocol_items.c b/lib/subghz/protocols/protocol_items.c
index 0d1a7774..b9e0e7a0 100644
--- a/lib/subghz/protocols/protocol_items.c
+++ b/lib/subghz/protocols/protocol_items.c
@@ -74,6 +74,7 @@ const SubGhzProtocol* const subghz_protocol_registry_items[] = {
     &subghz_protocol_mitsubishi_v0,
     &subghz_protocol_star_line,
     &subghz_protocol_scher_khan,
+    &subghz_protocol_sheriff_cfm,
 };
 
 const SubGhzProtocolRegistry subghz_protocol_registry = {
diff --git a/lib/subghz/protocols/protocol_items.h b/lib/subghz/protocols/protocol_items.h
index 3d218e88..d58db590 100644
--- a/lib/subghz/protocols/protocol_items.h
+++ b/lib/subghz/protocols/protocol_items.h
@@ -76,3 +76,4 @@
 #include "mazda_siemens.h"
 #include "star_line.h"
 #include "scher_khan.h"
+#include "sheriff_cfm.h"
diff --git a/lib/subghz/protocols/scher_khan.c b/lib/subghz/protocols/scher_khan.c
index 9f574850..b1b8b32b 100644
--- a/lib/subghz/protocols/scher_khan.c
+++ b/lib/subghz/protocols/scher_khan.c
@@ -2,8 +2,129 @@
 #include "../blocks/custom_btn_i.h"
 #include "../blocks/generic.h"
 
+#include <string.h>
+
 #define TAG "SubGhzProtocolScherKhan"
 
+static const uint8_t sk_pi_bytes[146] = {
+    0x24, 0x3F, 0x6A, 0x88, 0x85, 0xA3, 0x08, 0xD3,
+    0x13, 0x19, 0x8A, 0x2E, 0x03, 0x70, 0x73, 0x44,
+    0xA4, 0x09, 0x38, 0x22, 0x29, 0x9F, 0x31, 0xD0,
+    0x08, 0x2E, 0xFA, 0x98, 0xEC, 0x4E, 0x6C, 0x89,
+    0x45, 0x28, 0x21, 0xE6, 0x38, 0xD0, 0x13, 0x77,
+    0xBE, 0x54, 0x66, 0xCF, 0x34, 0xE9, 0x0C, 0x6C,
+    0xC0, 0xAC, 0x29, 0xB7, 0xC9, 0x7C, 0x50, 0xDD,
+    0x3F, 0x84, 0xD5, 0xB5, 0xB5, 0x47, 0x09, 0x17,
+    0x92, 0x16, 0xD5, 0xD9, 0x89, 0x79, 0xFB, 0x1B,
+    0xD1, 0x31, 0x0B, 0xA6, 0x98, 0xDF, 0xB5, 0xAC,
+    0x2F, 0xFD, 0x72, 0xDB, 0xD0, 0x1A, 0xDF, 0xB7,
+    0xB8, 0xE1, 0xAF, 0xED, 0x6A, 0x26, 0x7E, 0x96,
+    0xBA, 0x7C, 0x90, 0x45, 0xF1, 0x2C, 0x7F, 0x99,
+    0x24, 0xA1, 0x99, 0x47, 0xB3, 0x91, 0x6C, 0xF7,
+    0x08, 0x01, 0xF2, 0xE2, 0x85, 0x8E, 0xFC, 0x16,
+    0x63, 0x69, 0x20, 0xD8, 0x71, 0x57, 0x4E, 0x69,
+    0xA4, 0x58, 0xFE, 0xA3, 0xF4, 0x93, 0x3D, 0x7E,
+    0x0D, 0x95, 0x74, 0x8F, 0x72, 0x8E, 0xB6, 0x58,
+    0x71, 0x8B,
+};
+
+static const uint8_t sk_pro1_encoded[64] = {
+    0x63, 0x5A, 0x58, 0x98, 0xD6, 0xB3, 0x7E, 0x91,
+    0x37, 0x1E, 0xBB, 0x78, 0x43, 0x06, 0x20, 0x65,
+    0xC7, 0x4B, 0x3F, 0x73, 0x0D, 0xAE, 0x36, 0x86,
+    0x1E, 0x7A, 0xDA, 0xEB, 0xBB, 0x0F, 0x5A, 0xA9,
+    0x26, 0x3A, 0x51, 0xB2, 0x7A, 0xE0, 0x44, 0x61,
+    0xAC, 0x53, 0x02, 0xFA, 0x42, 0xBD, 0x2D, 0x6F,
+    0x85, 0xBB, 0x4A, 0xB5, 0xF9, 0x28, 0x46, 0xAF,
+    0x2B, 0xB4, 0xB2, 0x90, 0xD0, 0x05, 0x19, 0x64,
+};
+
+static const uint8_t sk_pro2_encoded[64] = {
+    0x90, 0x27, 0xA3, 0x9C, 0xEA, 0x6B, 0x8B, 0x4F,
+    0x91, 0x47, 0x58, 0x87, 0x8A, 0xD8, 0xD1, 0x99,
+    0x3B, 0xCD, 0x15, 0xFE, 0xF4, 0x1D, 0xEE, 0xE1,
+    0xBF, 0xA4, 0x9E, 0xCB, 0x1C, 0x72, 0x5F, 0x95,
+    0xAC, 0x28, 0xB0, 0x36, 0xE3, 0x2B, 0x1B, 0xAC,
+    0x30, 0x91, 0xFE, 0x62, 0xD0, 0xD3, 0x6B, 0xA6,
+    0x4F, 0x64, 0xC0, 0xF2, 0xD2, 0xCF, 0xCA, 0x36,
+    0x53, 0x3D, 0x36, 0xAA, 0x33, 0x67, 0x19, 0x7F,
+};
+
+static const uint8_t sk_pro_crc_encoded[2] = {
+    0x5B, 0x8C,
+};
+
+static void sk_pi_decode(uint8_t* out, const uint8_t* encoded, size_t offset, size_t len) {
+    for(size_t i = 0; i < len; i++) {
+        out[i] = encoded[i] ^ sk_pi_bytes[offset + i];
+    }
+}
+
+static uint8_t scher_khan_pro_checksum(const uint8_t* data, uint8_t poly) {
+    uint8_t cs = 0xFF;
+    for(uint8_t a = 0; a < 6; a++) {
+        uint8_t c = data[a];
+        for(uint8_t b = 0; b < 8; b++) {
+            uint8_t _cs = cs;
+            cs <<= 1;
+            if((_cs ^ c) & 0x80) cs ^= poly;
+            c <<= 1;
+        }
+    }
+    return cs;
+}
+
+static void scher_khan_pro_decrypt(
+    const uint8_t* encrypted,
+    uint8_t* decrypted,
+    const uint8_t* key_table) {
+    memset(decrypted, 0, 7);
+    decrypted[0] = encrypted[0];
+    uint8_t pkt_cnt = encrypted[0] & 0x0F;
+
+    for(int i = 1; i < 6; i++) {
+        for(int j = 0; j < 4; j++) {
+            uint8_t cr = key_table[(pkt_cnt << 2) + j];
+            uint8_t s = encrypted[i];
+
+            uint8_t bit = 0x80 >> (cr >> 4);
+            if((s & bit) == bit) decrypted[i] |= 0x80 >> (j << 1);
+
+            bit = 0x80 >> (cr & 0x0F);
+            if((s & bit) == bit) decrypted[i] |= 0x80 >> ((j << 1) + 1);
+        }
+        pkt_cnt = (pkt_cnt + 1) & 0x0F;
+        decrypted[i] ^= encrypted[i - 1];
+    }
+}
+
+static void scher_khan_pro_encrypt(
+    const uint8_t* plain,
+    uint8_t* encrypted,
+    const uint8_t* key_table) {
+    uint8_t src[7];
+    memcpy(src, plain, 7);
+    memset(encrypted, 0, 7);
+    encrypted[0] = src[0];
+    uint8_t pkt_cnt = src[0] & 0x0F;
+
+    for(int i = 1; i < 6; i++) {
+        src[i] ^= encrypted[i - 1];
+
+        for(int j = 0; j < 4; j++) {
+            uint8_t cr = key_table[(pkt_cnt << 2) + j];
+            uint8_t s = src[i];
+
+            uint8_t bit = 0x80 >> (j << 1);
+            if((s & bit) == bit) encrypted[i] |= 0x80 >> (cr >> 4);
+
+            bit = 0x80 >> ((j << 1) + 1);
+            if((s & bit) == bit) encrypted[i] |= 0x80 >> (cr & 0x0F);
+        }
+        pkt_cnt = (pkt_cnt + 1) & 0x0F;
+    }
+}
+
 static const char* scher_khan_btn_name(uint8_t btn) {
     switch(btn) {
     case 0x1: return "Lock";
@@ -163,6 +284,52 @@ static bool subghz_protocol_encoder_scher_khan_get_upload(
         instance->generic.btn = btn;
     }
 
+    if(instance->generic.data_count_bit == 57) {
+        if((instance->generic.cnt + 1) > 0xFFFF) {
+            instance->generic.cnt = 0;
+        } else {
+            instance->generic.cnt += 1;
+        }
+
+        uint8_t kb[7];
+        for(int i = 0; i < 7; i++) {
+            kb[i] = (uint8_t)((instance->generic.data >> (48 - i * 8)) & 0xFF);
+        }
+
+        uint8_t crc_polys[2];
+        sk_pi_decode(crc_polys, sk_pro_crc_encoded, 144, 2);
+
+        uint8_t key_table[64];
+        uint8_t poly;
+        uint8_t crc1 = scher_khan_pro_checksum(kb, crc_polys[0]);
+        if(crc1 == kb[6]) {
+            sk_pi_decode(key_table, sk_pro1_encoded, 0, 64);
+            poly = crc_polys[0];
+        } else {
+            sk_pi_decode(key_table, sk_pro2_encoded, 64, 64);
+            poly = crc_polys[1];
+        }
+
+        uint8_t decrypted[7];
+        scher_khan_pro_decrypt(kb, decrypted, key_table);
+
+        decrypted[3] = (decrypted[3] & 0xE0) | (btn & 0x0F);
+        decrypted[4] = (uint8_t)(instance->generic.cnt >> 8);
+        decrypted[5] = (uint8_t)(instance->generic.cnt & 0xFF);
+
+        uint8_t encrypted[7];
+        scher_khan_pro_encrypt(decrypted, encrypted, key_table);
+
+        encrypted[6] = scher_khan_pro_checksum(encrypted, poly);
+
+        instance->generic.data = 0;
+        for(int i = 0; i < 7; i++) {
+            instance->generic.data |= ((uint64_t)encrypted[i] << (48 - i * 8));
+        }
+        instance->generic.data &= 0x01FFFFFFFFFFFFFFULL;
+        instance->generic.btn = btn;
+    }
+
     size_t index = 0;
     size_t needed = (6 * 2) + (3 * 2) + (1 * 2) + (instance->generic.data_count_bit * 2) + 1;
     if(needed > instance->encoder.size_upload) {
@@ -567,12 +734,53 @@ static void subghz_protocol_scher_khan_check_remote_controller(
         instance->btn = (instance->data >> 24) & 0x0F;
         instance->cnt = instance->data & 0xFFFF;
         break;
-    case 57:
-        *protocol_name = "MAGIC CODE PRO/PRO2";
-        instance->serial = 0;
-        instance->btn = 0;
-        instance->cnt = 0;
+    case 57: {
+        uint8_t kb[7];
+        for(int i = 0; i < 7; i++) {
+            kb[i] = (uint8_t)((instance->data >> (48 - i * 8)) & 0xFF);
+        }
+
+        uint8_t crc_polys[2];
+        sk_pi_decode(crc_polys, sk_pro_crc_encoded, 144, 2);
+
+        uint8_t key_table[64];
+        uint8_t decrypted[7];
+        bool found = false;
+
+        uint8_t computed_crc = scher_khan_pro_checksum(kb, crc_polys[0]);
+        if(computed_crc == kb[6]) {
+            sk_pi_decode(key_table, sk_pro1_encoded, 0, 64);
+            scher_khan_pro_decrypt(kb, decrypted, key_table);
+            *protocol_name = "MAGIC CODE PRO1";
+            found = true;
+        }
+
+        if(!found) {
+            computed_crc = scher_khan_pro_checksum(kb, crc_polys[1]);
+            if(computed_crc == kb[6]) {
+                sk_pi_decode(key_table, sk_pro2_encoded, 64, 64);
+                scher_khan_pro_decrypt(kb, decrypted, key_table);
+                *protocol_name = "MAGIC CODE PRO2";
+                found = true;
+            }
+        }
+
+        if(found) {
+            instance->serial =
+                ((uint32_t)decrypted[0] << 16) |
+                ((uint32_t)decrypted[1] << 8) |
+                (uint32_t)decrypted[2];
+            instance->btn = decrypted[3] & 0x0F;
+            instance->cnt =
+                ((uint16_t)decrypted[4] << 8) | decrypted[5];
+        } else {
+            *protocol_name = "MAGIC CODE PRO/PRO2";
+            instance->serial = 0;
+            instance->btn = 0;
+            instance->cnt = 0;
+        }
         break;
+    }
     case 63:
         *protocol_name = "MAGIC CODE, Response";
         instance->serial = 0;
diff --git a/lib/subghz/protocols/sheriff_cfm.c b/lib/subghz/protocols/sheriff_cfm.c
new file mode 100644
index 00000000..c8be8682
--- /dev/null
+++ b/lib/subghz/protocols/sheriff_cfm.c
@@ -0,0 +1,634 @@
+#include "sheriff_cfm.h"
+#include "keeloq_common.h"
+#include "../blocks/custom_btn_i.h"
+#include "../blocks/generic.h"
+
+#include <string.h>
+
+#define TAG "SubGhzProtocolSheriffCfm"
+
+static const uint8_t cfm_pi_bytes[] = {
+    0xA4, 0x58, 0xFE, 0xA3, 0xF4, 0x93, 0x3D, 0x7E,
+    0x0D, 0x95, 0x74, 0x8F, 0x72, 0x8E, 0xB6, 0x58,
+};
+
+static const uint8_t cfm_zx750_encoded[8] = {
+    0x32, 0x4D, 0xCB, 0x84, 0x5F, 0xE9, 0x27, 0xCB,
+};
+
+static const uint8_t cfm_zx930_encoded[8] = {
+    0x94, 0x3B, 0x63, 0xA5, 0xE8, 0xF3, 0xAB, 0x60,
+};
+
+static void cfm_pi_decode(uint8_t* out, const uint8_t* encoded, size_t pi_offset, size_t len) {
+    for(size_t i = 0; i < len; i++) {
+        out[i] = encoded[i] ^ cfm_pi_bytes[pi_offset + i];
+    }
+}
+
+static uint8_t cfm_rlf(uint8_t in) {
+    return (uint8_t)((in << 1) | (in >> 7));
+}
+
+static uint8_t cfm_rrf(uint8_t in) {
+    return (uint8_t)((in >> 1) | (in << 7));
+}
+
+static uint8_t cfm_swap(uint8_t in) {
+    return (uint8_t)((in << 4) | (in >> 4));
+}
+
+typedef enum {
+    SheriffCfmModelZX750 = 0,
+    SheriffCfmModelZX930 = 1,
+    SheriffCfmModelCount = 2,
+} SheriffCfmModel;
+
+static const char* cfm_model_name(SheriffCfmModel model) {
+    switch(model) {
+    case SheriffCfmModelZX750: return "ZX-750";
+    case SheriffCfmModelZX930: return "ZX-930";
+    default: return "?";
+    }
+}
+
+static void cfm_decrypt_transform(uint8_t* hop, SheriffCfmModel model) {
+    uint8_t temp;
+    switch(model) {
+    case SheriffCfmModelZX750:
+        hop[0] = cfm_swap(hop[0]);
+        hop[2] = cfm_swap(hop[2]);
+        break;
+
+    case SheriffCfmModelZX930:
+        hop[0] = ~hop[0];
+        temp = hop[1];
+        hop[1] = hop[2];
+        hop[2] = temp;
+        hop[0] = cfm_rrf(hop[0]);
+        hop[1] = cfm_swap(hop[1]);
+        hop[1] = cfm_rlf(hop[1]);
+        hop[1] = cfm_rlf(hop[1]);
+        break;
+
+    default:
+        break;
+    }
+}
+
+static void cfm_encrypt_transform(uint8_t* hop, SheriffCfmModel model) {
+    uint8_t temp;
+    switch(model) {
+    case SheriffCfmModelZX750:
+        hop[0] = cfm_swap(hop[0]);
+        hop[2] = cfm_swap(hop[2]);
+        break;
+
+    case SheriffCfmModelZX930:
+        hop[1] = cfm_rrf(hop[1]);
+        hop[1] = cfm_rrf(hop[1]);
+        hop[1] = cfm_swap(hop[1]);
+        hop[0] = cfm_rlf(hop[0]);
+        hop[0] = ~hop[0];
+        temp = hop[1];
+        hop[1] = hop[2];
+        hop[2] = temp;
+        break;
+
+    default:
+        break;
+    }
+}
+
+static const char* cfm_btn_name(uint8_t btn) {
+    switch(btn) {
+    case 0x10: return "Lock";
+    case 0x20: return "Unlock";
+    case 0x40: return "Trunk";
+    case 0x80: return "Panic";
+    default: return "?";
+    }
+}
+
+static uint8_t cfm_btn_to_custom(uint8_t btn) {
+    switch(btn) {
+    case 0x10: return SUBGHZ_CUSTOM_BTN_UP;
+    case 0x20: return SUBGHZ_CUSTOM_BTN_DOWN;
+    case 0x40: return SUBGHZ_CUSTOM_BTN_LEFT;
+    case 0x80: return SUBGHZ_CUSTOM_BTN_RIGHT;
+    default: return SUBGHZ_CUSTOM_BTN_OK;
+    }
+}
+
+static uint8_t cfm_custom_to_btn(uint8_t custom, uint8_t original_btn) {
+    if(custom == SUBGHZ_CUSTOM_BTN_OK) return original_btn;
+    if(custom == SUBGHZ_CUSTOM_BTN_UP) return 0x10;
+    if(custom == SUBGHZ_CUSTOM_BTN_DOWN) return 0x20;
+    if(custom == SUBGHZ_CUSTOM_BTN_LEFT) return 0x40;
+    if(custom == SUBGHZ_CUSTOM_BTN_RIGHT) return 0x80;
+    return original_btn;
+}
+
+static uint8_t cfm_get_btn_code(uint8_t original_btn) {
+    return cfm_custom_to_btn(subghz_custom_btn_get(), original_btn);
+}
+
+static const SubGhzBlockConst subghz_protocol_sheriff_cfm_const = {
+    .te_short = 400,
+    .te_long = 800,
+    .te_delta = 140,
+    .min_count_bit_for_found = 64,
+};
+
+struct SubGhzProtocolDecoderSheriffCfm {
+    SubGhzProtocolDecoderBase base;
+    SubGhzBlockDecoder decoder;
+    SubGhzBlockGeneric generic;
+    uint16_t header_count;
+    SheriffCfmModel model;
+};
+
+struct SubGhzProtocolEncoderSheriffCfm {
+    SubGhzProtocolEncoderBase base;
+    SubGhzProtocolBlockEncoder encoder;
+    SubGhzBlockGeneric generic;
+    SheriffCfmModel model;
+};
+
+typedef enum {
+    SheriffCfmDecoderStepReset = 0,
+    SheriffCfmDecoderStepCheckPreambula,
+    SheriffCfmDecoderStepSaveDuration,
+    SheriffCfmDecoderStepCheckDuration,
+} SheriffCfmDecoderStep;
+
+const SubGhzProtocolDecoder subghz_protocol_sheriff_cfm_decoder = {
+    .alloc = subghz_protocol_decoder_sheriff_cfm_alloc,
+    .free = subghz_protocol_decoder_sheriff_cfm_free,
+    .feed = subghz_protocol_decoder_sheriff_cfm_feed,
+    .reset = subghz_protocol_decoder_sheriff_cfm_reset,
+    .get_hash_data = subghz_protocol_decoder_sheriff_cfm_get_hash_data,
+    .serialize = subghz_protocol_decoder_sheriff_cfm_serialize,
+    .deserialize = subghz_protocol_decoder_sheriff_cfm_deserialize,
+    .get_string = subghz_protocol_decoder_sheriff_cfm_get_string,
+};
+
+const SubGhzProtocolEncoder subghz_protocol_sheriff_cfm_encoder = {
+    .alloc = subghz_protocol_encoder_sheriff_cfm_alloc,
+    .free = subghz_protocol_encoder_sheriff_cfm_free,
+    .deserialize = subghz_protocol_encoder_sheriff_cfm_deserialize,
+    .stop = subghz_protocol_encoder_sheriff_cfm_stop,
+    .yield = subghz_protocol_encoder_sheriff_cfm_yield,
+};
+
+const SubGhzProtocol subghz_protocol_sheriff_cfm = {
+    .name = SUBGHZ_PROTOCOL_SHERIFF_CFM_NAME,
+    .type = SubGhzProtocolTypeDynamic,
+    .flag = SubGhzProtocolFlag_433 | SubGhzProtocolFlag_AM |
+            SubGhzProtocolFlag_Decodable |
+            SubGhzProtocolFlag_Load | SubGhzProtocolFlag_Save | SubGhzProtocolFlag_Send,
+    .decoder = &subghz_protocol_sheriff_cfm_decoder,
+    .encoder = &subghz_protocol_sheriff_cfm_encoder,
+};
+
+static uint64_t cfm_get_mfkey(SheriffCfmModel model) {
+    uint8_t dkey[8];
+    switch(model) {
+    case SheriffCfmModelZX750:
+        cfm_pi_decode(dkey, cfm_zx750_encoded, 0, 8);
+        break;
+    case SheriffCfmModelZX930:
+        cfm_pi_decode(dkey, cfm_zx930_encoded, 8, 8);
+        break;
+    default:
+        return 0;
+    }
+    uint64_t key = 0;
+    for(int i = 7; i >= 0; i--) {
+        key = (key << 8) | dkey[i];
+    }
+    return key;
+}
+
+static bool cfm_try_decrypt(
+    uint64_t data,
+    SheriffCfmModel* out_model,
+    uint8_t* out_btn,
+    uint32_t* out_serial,
+    uint16_t* out_cnt) {
+
+    uint32_t hop_encrypted = (uint32_t)(data & 0xFFFFFFFF);
+    uint32_t fix = (uint32_t)(data >> 32);
+
+    for(SheriffCfmModel model = 0; model < SheriffCfmModelCount; model++) {
+        uint8_t hop_bytes[4];
+        hop_bytes[0] = (uint8_t)(hop_encrypted & 0xFF);
+        hop_bytes[1] = (uint8_t)((hop_encrypted >> 8) & 0xFF);
+        hop_bytes[2] = (uint8_t)((hop_encrypted >> 16) & 0xFF);
+        hop_bytes[3] = (uint8_t)((hop_encrypted >> 24) & 0xFF);
+
+        cfm_decrypt_transform(hop_bytes, model);
+
+        uint32_t hop_transformed =
+            (uint32_t)hop_bytes[0] |
+            ((uint32_t)hop_bytes[1] << 8) |
+            ((uint32_t)hop_bytes[2] << 16) |
+            ((uint32_t)hop_bytes[3] << 24);
+
+        uint64_t mfkey = cfm_get_mfkey(model);
+        uint32_t decrypted = subghz_protocol_keeloq_common_decrypt(hop_transformed, mfkey);
+
+        uint16_t dec_serial_lo = (uint16_t)((decrypted >> 16) & 0x3FF);
+        uint16_t fix_serial_lo = (uint16_t)(fix & 0x3FF);
+
+        uint8_t btn_byte = (uint8_t)((decrypted >> 24) & 0xFF);
+        bool valid_btn = (btn_byte == 0x10 || btn_byte == 0x20 ||
+                          btn_byte == 0x40 || btn_byte == 0x80);
+
+        if(valid_btn && (dec_serial_lo == fix_serial_lo)) {
+            *out_model = model;
+            *out_btn = btn_byte;
+            *out_serial = fix;
+            *out_cnt = (uint16_t)(decrypted & 0xFFFF);
+            return true;
+        }
+    }
+    return false;
+}
+
+void* subghz_protocol_encoder_sheriff_cfm_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
+    SubGhzProtocolEncoderSheriffCfm* instance = malloc(sizeof(SubGhzProtocolEncoderSheriffCfm));
+    instance->base.protocol = &subghz_protocol_sheriff_cfm;
+    instance->generic.protocol_name = instance->base.protocol->name;
+    instance->encoder.repeat = 3;
+    instance->encoder.size_upload = 256;
+    instance->encoder.upload = malloc(instance->encoder.size_upload * sizeof(LevelDuration));
+    instance->encoder.is_running = false;
+    instance->encoder.front = 0;
+    instance->model = SheriffCfmModelZX750;
+    return instance;
+}
+
+void subghz_protocol_encoder_sheriff_cfm_free(void* context) {
+    furi_check(context);
+    SubGhzProtocolEncoderSheriffCfm* instance = context;
+    free(instance->encoder.upload);
+    free(instance);
+}
+
+static bool subghz_protocol_encoder_sheriff_cfm_get_upload(
+    SubGhzProtocolEncoderSheriffCfm* instance,
+    uint8_t btn) {
+    furi_check(instance);
+
+    if((instance->generic.cnt + 1) > 0xFFFF) {
+        instance->generic.cnt = 0;
+    } else {
+        instance->generic.cnt += 1;
+    }
+
+    uint32_t fix = (uint32_t)(instance->generic.data >> 32);
+    uint16_t serial_lo = (uint16_t)(fix & 0x3FF);
+    uint32_t hop_plain =
+        ((uint32_t)btn << 24) |
+        ((uint32_t)serial_lo << 16) |
+        (instance->generic.cnt & 0xFFFF);
+
+    uint64_t mfkey = cfm_get_mfkey(instance->model);
+    uint32_t hop_encrypted = subghz_protocol_keeloq_common_encrypt(hop_plain, mfkey);
+
+    uint8_t hop_bytes[4];
+    hop_bytes[0] = (uint8_t)(hop_encrypted & 0xFF);
+    hop_bytes[1] = (uint8_t)((hop_encrypted >> 8) & 0xFF);
+    hop_bytes[2] = (uint8_t)((hop_encrypted >> 16) & 0xFF);
+    hop_bytes[3] = (uint8_t)((hop_encrypted >> 24) & 0xFF);
+    cfm_encrypt_transform(hop_bytes, instance->model);
+
+    hop_encrypted =
+        (uint32_t)hop_bytes[0] |
+        ((uint32_t)hop_bytes[1] << 8) |
+        ((uint32_t)hop_bytes[2] << 16) |
+        ((uint32_t)hop_bytes[3] << 24);
+
+    instance->generic.data = ((uint64_t)fix << 32) | hop_encrypted;
+    instance->generic.btn = btn;
+
+    size_t index = 0;
+
+    for(uint8_t i = 11; i > 0; i--) {
+        instance->encoder.upload[index++] =
+            level_duration_make(true, (uint32_t)subghz_protocol_sheriff_cfm_const.te_short);
+        instance->encoder.upload[index++] =
+            level_duration_make(false, (uint32_t)subghz_protocol_sheriff_cfm_const.te_short);
+    }
+    instance->encoder.upload[index++] =
+        level_duration_make(true, (uint32_t)subghz_protocol_sheriff_cfm_const.te_short);
+    instance->encoder.upload[index++] =
+        level_duration_make(false, (uint32_t)subghz_protocol_sheriff_cfm_const.te_short * 10);
+
+    for(uint8_t i = instance->generic.data_count_bit; i > 0; i--) {
+        if(bit_read(instance->generic.data, i - 1)) {
+            instance->encoder.upload[index++] =
+                level_duration_make(true, (uint32_t)subghz_protocol_sheriff_cfm_const.te_short);
+            instance->encoder.upload[index++] =
+                level_duration_make(false, (uint32_t)subghz_protocol_sheriff_cfm_const.te_long);
+        } else {
+            instance->encoder.upload[index++] =
+                level_duration_make(true, (uint32_t)subghz_protocol_sheriff_cfm_const.te_long);
+            instance->encoder.upload[index++] =
+                level_duration_make(false, (uint32_t)subghz_protocol_sheriff_cfm_const.te_short);
+        }
+    }
+
+    instance->encoder.upload[index++] =
+        level_duration_make(true, (uint32_t)subghz_protocol_sheriff_cfm_const.te_short);
+    instance->encoder.upload[index++] =
+        level_duration_make(false, (uint32_t)subghz_protocol_sheriff_cfm_const.te_short * 40);
+
+    instance->encoder.size_upload = index;
+    return true;
+}
+
+SubGhzProtocolStatus
+    subghz_protocol_encoder_sheriff_cfm_deserialize(void* context, FlipperFormat* flipper_format) {
+    furi_check(context);
+    SubGhzProtocolEncoderSheriffCfm* instance = context;
+    SubGhzProtocolStatus ret = SubGhzProtocolStatusError;
+
+    do {
+        ret = subghz_block_generic_deserialize_check_count_bit(
+            &instance->generic,
+            flipper_format,
+            subghz_protocol_sheriff_cfm_const.min_count_bit_for_found);
+        if(ret != SubGhzProtocolStatusOk) break;
+
+        uint32_t model_temp = 0;
+        if(flipper_format_read_uint32(flipper_format, "Model", &model_temp, 1)) {
+            instance->model = (SheriffCfmModel)model_temp;
+        } else {
+            SheriffCfmModel detected;
+            uint8_t det_btn;
+            uint32_t det_serial;
+            uint16_t det_cnt;
+            if(cfm_try_decrypt(instance->generic.data, &detected, &det_btn, &det_serial, &det_cnt)) {
+                instance->model = detected;
+                instance->generic.btn = det_btn;
+                instance->generic.serial = det_serial;
+                instance->generic.cnt = det_cnt;
+            }
+        }
+
+        if(!flipper_format_read_uint32(
+               flipper_format, "Repeat", (uint32_t*)&instance->encoder.repeat, 1)) {
+            instance->encoder.repeat = 3;
+        }
+
+        subghz_custom_btn_set_original(cfm_btn_to_custom(instance->generic.btn));
+        subghz_custom_btn_set_max(4);
+
+        uint8_t selected_btn = cfm_get_btn_code(instance->generic.btn);
+
+        if(!subghz_protocol_encoder_sheriff_cfm_get_upload(instance, selected_btn)) {
+            break;
+        }
+
+        instance->encoder.is_running = true;
+        instance->encoder.front = 0;
+        ret = SubGhzProtocolStatusOk;
+    } while(false);
+
+    return ret;
+}
+
+void subghz_protocol_encoder_sheriff_cfm_stop(void* context) {
+    furi_check(context);
+    SubGhzProtocolEncoderSheriffCfm* instance = context;
+    instance->encoder.is_running = false;
+}
+
+LevelDuration subghz_protocol_encoder_sheriff_cfm_yield(void* context) {
+    SubGhzProtocolEncoderSheriffCfm* instance = context;
+
+    if(instance->encoder.repeat == 0 || !instance->encoder.is_running) {
+        instance->encoder.is_running = false;
+        return level_duration_reset();
+    }
+
+    LevelDuration ret = instance->encoder.upload[instance->encoder.front];
+
+    if(++instance->encoder.front == instance->encoder.size_upload) {
+        instance->encoder.repeat--;
+        instance->encoder.front = 0;
+    }
+
+    return ret;
+}
+
+void* subghz_protocol_decoder_sheriff_cfm_alloc(SubGhzEnvironment* environment) {
+    UNUSED(environment);
+    SubGhzProtocolDecoderSheriffCfm* instance = malloc(sizeof(SubGhzProtocolDecoderSheriffCfm));
+    instance->base.protocol = &subghz_protocol_sheriff_cfm;
+    instance->generic.protocol_name = instance->base.protocol->name;
+    return instance;
+}
+
+void subghz_protocol_decoder_sheriff_cfm_free(void* context) {
+    furi_check(context);
+    SubGhzProtocolDecoderSheriffCfm* instance = context;
+    free(instance);
+}
+
+void subghz_protocol_decoder_sheriff_cfm_reset(void* context) {
+    furi_check(context);
+    SubGhzProtocolDecoderSheriffCfm* instance = context;
+    instance->decoder.parser_step = SheriffCfmDecoderStepReset;
+    instance->header_count = 0;
+}
+
+void subghz_protocol_decoder_sheriff_cfm_feed(void* context, bool level, uint32_t duration) {
+    furi_check(context);
+    SubGhzProtocolDecoderSheriffCfm* instance = context;
+
+    switch(instance->decoder.parser_step) {
+    case SheriffCfmDecoderStepReset:
+        if((level) && DURATION_DIFF(duration, subghz_protocol_sheriff_cfm_const.te_short) <
+                          subghz_protocol_sheriff_cfm_const.te_delta) {
+            instance->decoder.parser_step = SheriffCfmDecoderStepCheckPreambula;
+            instance->header_count++;
+        }
+        break;
+
+    case SheriffCfmDecoderStepCheckPreambula:
+        if((!level) && (DURATION_DIFF(duration, subghz_protocol_sheriff_cfm_const.te_short) <
+                        subghz_protocol_sheriff_cfm_const.te_delta)) {
+            instance->decoder.parser_step = SheriffCfmDecoderStepReset;
+            break;
+        }
+        if((instance->header_count > 2) &&
+           (DURATION_DIFF(duration, subghz_protocol_sheriff_cfm_const.te_short * 10) <
+            subghz_protocol_sheriff_cfm_const.te_delta * 10)) {
+            instance->decoder.parser_step = SheriffCfmDecoderStepSaveDuration;
+            instance->decoder.decode_data = 0;
+            instance->decoder.decode_count_bit = 0;
+        } else {
+            instance->decoder.parser_step = SheriffCfmDecoderStepReset;
+            instance->header_count = 0;
+        }
+        break;
+
+    case SheriffCfmDecoderStepSaveDuration:
+        if(level) {
+            instance->decoder.te_last = duration;
+            instance->decoder.parser_step = SheriffCfmDecoderStepCheckDuration;
+        }
+        break;
+
+    case SheriffCfmDecoderStepCheckDuration:
+        if(!level) {
+            if(duration >= ((uint32_t)subghz_protocol_sheriff_cfm_const.te_short * 2 +
+                            subghz_protocol_sheriff_cfm_const.te_delta)) {
+                instance->decoder.parser_step = SheriffCfmDecoderStepReset;
+                if((instance->decoder.decode_count_bit >=
+                    subghz_protocol_sheriff_cfm_const.min_count_bit_for_found) &&
+                   (instance->decoder.decode_count_bit <=
+                    subghz_protocol_sheriff_cfm_const.min_count_bit_for_found + 2)) {
+                    SheriffCfmModel model;
+                    uint8_t btn;
+                    uint32_t serial;
+                    uint16_t cnt;
+                    if(cfm_try_decrypt(
+                           instance->decoder.decode_data, &model, &btn, &serial, &cnt)) {
+                        instance->generic.data = instance->decoder.decode_data;
+                        instance->generic.data_count_bit =
+                            subghz_protocol_sheriff_cfm_const.min_count_bit_for_found;
+                        instance->model = model;
+                        instance->generic.btn = btn;
+                        instance->generic.serial = serial;
+                        instance->generic.cnt = cnt;
+                        if(instance->base.callback)
+                            instance->base.callback(&instance->base, instance->base.context);
+                    }
+                }
+                instance->decoder.decode_data = 0;
+                instance->decoder.decode_count_bit = 0;
+                instance->header_count = 0;
+                break;
+            } else if(
+                (DURATION_DIFF(
+                     instance->decoder.te_last, subghz_protocol_sheriff_cfm_const.te_short) <
+                 subghz_protocol_sheriff_cfm_const.te_delta) &&
+                (DURATION_DIFF(duration, subghz_protocol_sheriff_cfm_const.te_long) <
+                 subghz_protocol_sheriff_cfm_const.te_delta * 2)) {
+                if(instance->decoder.decode_count_bit <
+                   subghz_protocol_sheriff_cfm_const.min_count_bit_for_found) {
+                    subghz_protocol_blocks_add_bit(&instance->decoder, 1);
+                } else {
+                    instance->decoder.decode_count_bit++;
+                }
+                instance->decoder.parser_step = SheriffCfmDecoderStepSaveDuration;
+            } else if(
+                (DURATION_DIFF(
+                     instance->decoder.te_last, subghz_protocol_sheriff_cfm_const.te_long) <
+                 subghz_protocol_sheriff_cfm_const.te_delta * 2) &&
+                (DURATION_DIFF(duration, subghz_protocol_sheriff_cfm_const.te_short) <
+                 subghz_protocol_sheriff_cfm_const.te_delta)) {
+                if(instance->decoder.decode_count_bit <
+                   subghz_protocol_sheriff_cfm_const.min_count_bit_for_found) {
+                    subghz_protocol_blocks_add_bit(&instance->decoder, 0);
+                } else {
+                    instance->decoder.decode_count_bit++;
+                }
+                instance->decoder.parser_step = SheriffCfmDecoderStepSaveDuration;
+            } else {
+                instance->decoder.parser_step = SheriffCfmDecoderStepReset;
+                instance->header_count = 0;
+            }
+        } else {
+            instance->decoder.parser_step = SheriffCfmDecoderStepReset;
+            instance->header_count = 0;
+        }
+        break;
+    }
+}
+
+uint8_t subghz_protocol_decoder_sheriff_cfm_get_hash_data(void* context) {
+    furi_check(context);
+    SubGhzProtocolDecoderSheriffCfm* instance = context;
+    return subghz_protocol_blocks_get_hash_data(
+        &instance->decoder, (instance->decoder.decode_count_bit / 8) + 1);
+}
+
+SubGhzProtocolStatus subghz_protocol_decoder_sheriff_cfm_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    SubGhzRadioPreset* preset) {
+    furi_check(context);
+    SubGhzProtocolDecoderSheriffCfm* instance = context;
+    SubGhzProtocolStatus ret =
+        subghz_block_generic_serialize(&instance->generic, flipper_format, preset);
+
+    if(ret == SubGhzProtocolStatusOk) {
+        uint32_t model = (uint32_t)instance->model;
+        flipper_format_insert_or_update_uint32(flipper_format, "Model", &model, 1);
+    }
+    return ret;
+}
+
+SubGhzProtocolStatus
+    subghz_protocol_decoder_sheriff_cfm_deserialize(void* context, FlipperFormat* flipper_format) {
+    furi_check(context);
+    SubGhzProtocolDecoderSheriffCfm* instance = context;
+    SubGhzProtocolStatus ret = SubGhzProtocolStatusError;
+
+    do {
+        ret = subghz_block_generic_deserialize_check_count_bit(
+            &instance->generic,
+            flipper_format,
+            subghz_protocol_sheriff_cfm_const.min_count_bit_for_found);
+        if(ret != SubGhzProtocolStatusOk) break;
+
+        uint32_t model_temp = 0;
+        if(flipper_format_read_uint32(flipper_format, "Model", &model_temp, 1)) {
+            instance->model = (SheriffCfmModel)model_temp;
+        }
+
+        SheriffCfmModel detected;
+        uint8_t btn;
+        uint32_t serial;
+        uint16_t cnt;
+        if(cfm_try_decrypt(instance->generic.data, &detected, &btn, &serial, &cnt)) {
+            instance->model = detected;
+            instance->generic.btn = btn;
+            instance->generic.serial = serial;
+            instance->generic.cnt = cnt;
+        }
+    } while(false);
+
+    return ret;
+}
+
+void subghz_protocol_decoder_sheriff_cfm_get_string(void* context, FuriString* output) {
+    furi_check(context);
+    SubGhzProtocolDecoderSheriffCfm* instance = context;
+
+    subghz_custom_btn_set_original(cfm_btn_to_custom(instance->generic.btn));
+    subghz_custom_btn_set_max(4);
+
+    uint8_t selected_btn = cfm_get_btn_code(instance->generic.btn);
+
+    furi_string_cat_printf(
+        output,
+        "%s %dbit\r\n"
+        "Key:0x%lX%08lX\r\n"
+        "Sn:%08lX Btn:[%s]\r\n"
+        "Cnt:%04lX Model:%s\r\n",
+        instance->generic.protocol_name,
+        instance->generic.data_count_bit,
+        (uint32_t)(instance->generic.data >> 32),
+        (uint32_t)instance->generic.data,
+        instance->generic.serial,
+        cfm_btn_name(selected_btn),
+        (uint32_t)instance->generic.cnt,
+        cfm_model_name(instance->model));
+}
diff --git a/lib/subghz/protocols/sheriff_cfm.h b/lib/subghz/protocols/sheriff_cfm.h
new file mode 100644
index 00000000..126cf993
--- /dev/null
+++ b/lib/subghz/protocols/sheriff_cfm.h
@@ -0,0 +1,43 @@
+#pragma once
+#include <furi.h>
+#include <lib/subghz/protocols/base.h>
+#include <lib/subghz/types.h>
+#include <lib/subghz/blocks/const.h>
+#include <lib/subghz/blocks/decoder.h>
+#include <lib/subghz/blocks/encoder.h>
+#include <lib/subghz/blocks/generic.h>
+#include <lib/subghz/blocks/math.h>
+#include <flipper_format/flipper_format.h>
+
+#define SUBGHZ_PROTOCOL_SHERIFF_CFM_NAME "Sheriff CFM"
+
+typedef struct SubGhzProtocolDecoderSheriffCfm SubGhzProtocolDecoderSheriffCfm;
+typedef struct SubGhzProtocolEncoderSheriffCfm SubGhzProtocolEncoderSheriffCfm;
+
+extern const SubGhzProtocolDecoder subghz_protocol_sheriff_cfm_decoder;
+extern const SubGhzProtocolEncoder subghz_protocol_sheriff_cfm_encoder;
+extern const SubGhzProtocol subghz_protocol_sheriff_cfm;
+
+void* subghz_protocol_decoder_sheriff_cfm_alloc(SubGhzEnvironment* environment);
+void subghz_protocol_decoder_sheriff_cfm_free(void* context);
+void subghz_protocol_decoder_sheriff_cfm_reset(void* context);
+void subghz_protocol_decoder_sheriff_cfm_feed(void* context, bool level, uint32_t duration);
+
+uint8_t subghz_protocol_decoder_sheriff_cfm_get_hash_data(void* context);
+
+SubGhzProtocolStatus subghz_protocol_decoder_sheriff_cfm_serialize(
+    void* context,
+    FlipperFormat* flipper_format,
+    SubGhzRadioPreset* preset);
+
+SubGhzProtocolStatus
+    subghz_protocol_decoder_sheriff_cfm_deserialize(void* context, FlipperFormat* flipper_format);
+
+void subghz_protocol_decoder_sheriff_cfm_get_string(void* context, FuriString* output);
+
+void* subghz_protocol_encoder_sheriff_cfm_alloc(SubGhzEnvironment* environment);
+void subghz_protocol_encoder_sheriff_cfm_free(void* context);
+SubGhzProtocolStatus
+    subghz_protocol_encoder_sheriff_cfm_deserialize(void* context, FlipperFormat* flipper_format);
+void subghz_protocol_encoder_sheriff_cfm_stop(void* context);
+LevelDuration subghz_protocol_encoder_sheriff_cfm_yield(void* context);