diff --git a/crypto/src/crypto/signers/Ed25519Signer.cs b/crypto/src/crypto/signers/Ed25519Signer.cs
index ef8714188..a916601e6 100644
--- a/crypto/src/crypto/signers/Ed25519Signer.cs
+++ b/crypto/src/crypto/signers/Ed25519Signer.cs
@@ -99,6 +99,9 @@ namespace Org.BouncyCastle.Crypto.Signers
internal bool VerifySignature(Ed25519PublicKeyParameters publicKey, byte[] signature)
{
+ if (Ed25519.SignatureSize != signature.Length)
+ return false;
+
lock (this)
{
#if PORTABLE
diff --git a/crypto/src/crypto/signers/Ed25519ctxSigner.cs b/crypto/src/crypto/signers/Ed25519ctxSigner.cs
index 60c708019..ab7201b62 100644
--- a/crypto/src/crypto/signers/Ed25519ctxSigner.cs
+++ b/crypto/src/crypto/signers/Ed25519ctxSigner.cs
@@ -101,6 +101,9 @@ namespace Org.BouncyCastle.Crypto.Signers
internal bool VerifySignature(Ed25519PublicKeyParameters publicKey, byte[] ctx, byte[] signature)
{
+ if (Ed25519.SignatureSize != signature.Length)
+ return false;
+
lock (this)
{
#if PORTABLE
diff --git a/crypto/src/crypto/signers/Ed25519phSigner.cs b/crypto/src/crypto/signers/Ed25519phSigner.cs
index 548ca1f29..2538b16f5 100644
--- a/crypto/src/crypto/signers/Ed25519phSigner.cs
+++ b/crypto/src/crypto/signers/Ed25519phSigner.cs
@@ -75,6 +75,8 @@ namespace Org.BouncyCastle.Crypto.Signers
{
if (forSigning || null == publicKey)
throw new InvalidOperationException("Ed25519phSigner not initialised for verification");
+ if (Ed25519.SignatureSize != signature.Length)
+ return false;
byte[] pk = publicKey.GetEncoded();
return Ed25519.VerifyPrehash(signature, 0, pk, 0, context, prehash);
diff --git a/crypto/src/crypto/signers/Ed448Signer.cs b/crypto/src/crypto/signers/Ed448Signer.cs
index 0863e5dd1..b0563d544 100644
--- a/crypto/src/crypto/signers/Ed448Signer.cs
+++ b/crypto/src/crypto/signers/Ed448Signer.cs
@@ -101,6 +101,9 @@ namespace Org.BouncyCastle.Crypto.Signers
internal bool VerifySignature(Ed448PublicKeyParameters publicKey, byte[] ctx, byte[] signature)
{
+ if (Ed448.SignatureSize != signature.Length)
+ return false;
+
lock (this)
{
#if PORTABLE
diff --git a/crypto/src/crypto/signers/Ed448phSigner.cs b/crypto/src/crypto/signers/Ed448phSigner.cs
index 8f451f9e8..d656c1392 100644
--- a/crypto/src/crypto/signers/Ed448phSigner.cs
+++ b/crypto/src/crypto/signers/Ed448phSigner.cs
@@ -75,6 +75,8 @@ namespace Org.BouncyCastle.Crypto.Signers
{
if (forSigning || null == publicKey)
throw new InvalidOperationException("Ed448phSigner not initialised for verification");
+ if (Ed448.SignatureSize != signature.Length)
+ return false;
byte[] pk = publicKey.GetEncoded();
return Ed448.VerifyPrehash(signature, 0, pk, 0, context, prehash);
|
