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fix: Blowfish - ignore IV length in ECB mode

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Fixes https://github.com/gchq/CyberChef/issues/1895.
This commit is contained in:
Francisco Pombal
2024-09-15 22:18:49 +01:00
parent d635cca210
commit 1fce8e5112
3 changed files with 21 additions and 9 deletions
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4
src/core/operations/BlowfishDecrypt.mjs
View File

@@ -76,8 +76,8 @@ class BlowfishDecrypt extends Operation {
Blowfish's key length needs to be between 4 and 56 bytes (32-448 bits).`);
}
if (iv.length !== 8) {
throw new OperationError(`Invalid IV length: ${iv.length} bytes. Expected 8 bytes`);
if (mode !== "ECB" && iv.length !== 8) {
throw new OperationError(`Invalid IV length: ${iv.length} bytes. Expected 8 bytes.`);
}
input = Utils.convertToByteString(input, inputType);

6
src/core/operations/BlowfishEncrypt.mjs
View File

@@ -72,12 +72,12 @@ class BlowfishEncrypt extends Operation {
if (key.length < 4 || key.length > 56) {
throw new OperationError(`Invalid key length: ${key.length} bytes
Blowfish's key length needs to be between 4 and 56 bytes (32-448 bits).`);
}
if (iv.length !== 8) {
throw new OperationError(`Invalid IV length: ${iv.length} bytes. Expected 8 bytes`);
if (mode !== "ECB" && iv.length !== 8) {
throw new OperationError(`Invalid IV length: ${iv.length} bytes. Expected 8 bytes.`);
}
input = Utils.convertToByteString(input, inputType);