gnodet-bot commented on code in PR #26725:
URL: https://github.com/apache/camel/pull/26725#discussion_r4091438798
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components/camel-crypto/src/main/java/org/apache/camel/converter/crypto/CryptoDataFormat.java:
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@@ -247,6 +293,31 @@ public byte[] getCalculatedMac() {
};
}
+ /**
+ * A fresh initialization vector, sized to the cipher's block length. Only
used when the vector is inlined into the
+ * message, so the reader takes it from the stream and nothing needs to be
shared out of band.
+ */
+ private byte[] generateInitializationVector() throws Exception {
+ byte[] iv = new byte[getCipherBlockSize()];
+ SECURE_RANDOM.nextBytes(iv);
+ return iv;
+ }
+
+ private int getCipherBlockSize() throws Exception {
+ int blockSize = cachedBlockSize;
+ if (blockSize == 0) {
+ Cipher cipher
+ = cryptoProvider == null ? Cipher.getInstance(algorithm) :
Cipher.getInstance(algorithm, cryptoProvider);
+ blockSize = cipher.getBlockSize();
+ if (blockSize <= 0) {
+ // A stream cipher reports no block size; 16 bytes is the
usual nonce length
+ blockSize = 16;
+ }
+ cachedBlockSize = blockSize;
Review Comment:
test inline comment for getCipherBlockSize
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