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Crypto: Enforce correct seed and hash lengths in EdDSAPrivateKeySpec

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From github PR #22
https://github.com/str4d/ed25519-java/commit/747df9f9aa407ba90d34f498c5eab6f304fdd58a
This commit is contained in:
zzz
2017-01-04 13:00:31 +00:00
parent 91007735a1
commit 134cbd46e4
1 changed files with 9 additions and 2 deletions
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core/java/src/net/i2p/crypto/eddsa/spec/EdDSAPrivateKeySpec.java
+9 -2
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@@ -21,9 +21,12 @@ public class EdDSAPrivateKeySpec implements KeySpec {
private final EdDSAParameterSpec spec;
/**
* @throws IllegalArgumentException if hash algorithm is unsupported
* @throws IllegalArgumentException if seed length is wrong or hash algorithm is unsupported
*/
public EdDSAPrivateKeySpec(byte[] seed, EdDSAParameterSpec spec) {
if (seed.length != spec.getCurve().getField().getb()/8)
throw new IllegalArgumentException("seed length is wrong");
this.spec = spec;
this.seed = seed;
@@ -56,9 +59,13 @@ public class EdDSAPrivateKeySpec implements KeySpec {
* getSeed() will return null if this constructor is used.
*
* @param h the private key
* @throws IllegalArgumentException if hash length is wrong
* @since 0.9.27 (GitHub issue #17)
*/
public EdDSAPrivateKeySpec(EdDSAParameterSpec spec, byte[] h) {
if (h.length != spec.getCurve().getField().getb()/4)
throw new IllegalArgumentException("hash length is wrong");
this.seed = null;
this.h = h;
this.spec = spec;
@@ -77,7 +84,7 @@ public class EdDSAPrivateKeySpec implements KeySpec {
this.h = h;
this.a = a;
this.A = A;
this.spec = spec;
this.spec = spec;
}
/**