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fix: DES/Triple DES - misleading error messages

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Fixes https://github.com/gchq/CyberChef/issues/1843.
This commit is contained in:
Francisco Pombal 2024-09-16 15:36:57 +01:00
parent d635cca210
commit 3eb1af0278
4 changed files with 8 additions and 12 deletions
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5
src/core/operations/DESDecrypt.mjs
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@ -22,7 +22,7 @@ class DESDecrypt extends Operation {
this.name = "DES Decrypt";
this.module = "Ciphers";
this.description = "DES is a previously dominant algorithm for encryption, and was published as an official U.S. Federal Information Processing Standard (FIPS). It is now considered to be insecure due to its small key size.<br><br><b>Key:</b> DES uses a key length of 8 bytes (64 bits).<br>Triple DES uses a key length of 24 bytes (192 bits).<br><br><b>IV:</b> The Initialization Vector should be 8 bytes long. If not entered, it will default to 8 null bytes.<br><br><b>Padding:</b> In CBC and ECB mode, PKCS#7 padding will be used as a default.";
this.description = "DES is a previously dominant algorithm for encryption, and was published as an official U.S. Federal Information Processing Standard (FIPS). It is now considered to be insecure due to its small key size.<br><br><b>Key:</b> DES uses a key length of 8 bytes (64 bits).<br><br><b>IV:</b> The Initialization Vector should be 8 bytes long. If not entered, it will default to 8 null bytes.<br><br><b>Padding:</b> In CBC and ECB mode, PKCS#7 padding will be used as a default.";
this.infoURL = "https://wikipedia.org/wiki/Data_Encryption_Standard";
this.inputType = "string";
this.outputType = "string";
@ -72,8 +72,7 @@ class DESDecrypt extends Operation {
if (key.length !== 8) {
throw new OperationError(`Invalid key length: ${key.length} bytes
DES uses a key length of 8 bytes (64 bits).
Triple DES uses a key length of 24 bytes (192 bits).`);
DES uses a key length of 8 bytes (64 bits).`);
}
if (iv.length !== 8 && mode !== "ECB") {
throw new OperationError(`Invalid IV length: ${iv.length} bytes