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+++ This bug was initially created as a clone of Bug #1133717 +++
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);
------------------------------------------------------------------------------
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://rhn.redhat.com/errata/RHBA-2015-0521.html