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8302017: Allocate BadPaddingException only if it will be thrown #403

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8302017: Allocate BadPaddingException only if it will be thrown #403

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739f7a2
Backport 334b977259930368160db705c1f2feda0b0e8707
alexeybakhtin Dec 14, 2023
66deb0d
Fix switch statement
alexeybakhtin Dec 14, 2023
2110d9f
Fixed copyright date and engineVerify formating
alexeybakhtin Dec 14, 2023
8e33ae8
Move signature length verification out of try block
alexeybakhtin Dec 15, 2023
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9 changes: 5 additions & 4 deletions jdk/src/share/classes/sun/security/rsa/RSASignature.java
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Original file line number Diff line number Diff line change
Expand Up @@ -206,13 +206,14 @@ protected boolean engineVerify(byte[] sigBytes) throws SignatureException {
if (publicKey == null) {
throw new SignatureException("Missing public key");
}
try {
if (sigBytes.length != RSACore.getByteLength(publicKey)) {
throw new SignatureException("Bad signature length: got " +

if (sigBytes.length != RSACore.getByteLength(publicKey)) {
throw new SignatureException("Bad signature length: got " +
sigBytes.length + " but was expecting " +
RSACore.getByteLength(publicKey));
}
}

try {
// https://www.rfc-editor.org/rfc/rfc8017.html#section-8.2.2
// Step 4 suggests comparing the encoded message
byte[] decrypted = RSACore.rsa(sigBytes, publicKey);
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