JSS doesn't currently validate the key strength properly for the RC4 algorithm. Any strength is considered valid. Here is the RC4 validation method from mozilla/security/jss/org/mozilla/jss/crypto/KeyGenAlgorithm.java: ------------------------------------------------------------------------------ public static final KeyGenAlgorithm RC4 = new KeyGenAlgorithm(CKM_RC4_KEY_GEN, "RC4", new KeyStrengthValidator() { public boolean isValidKeyStrength(int strength) { return true; } }, null, null); ------------------------------------------------------------------------------ RC4 acceptable key sizes should really be between 40 and 2048 bits. The RC4 strength validator method should look like this: ------------------------------------------------------------------------------ public static final KeyGenAlgorithm RC4 = new KeyGenAlgorithm(CKM_RC4_KEY_GEN, "RC4", new KeyStrengthValidator() { public boolean isValidKeyStrength(int strength) { return strength>=40 && strength <= (256*8); } }, null, null); ------------------------------------------------------------------------------
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