Sha256: 2447d42042dd35792077dc78c0bfba93e1de204b43758ee18e8f054adec5cf63
Contents?: true
Size: 1.3 KB
Versions: 16
Compression:
Stored size: 1.3 KB
Contents
package jose
import (
"crypto/rand"
"crypto/rsa"
"errors"
)
func init() {
RegisterJws(&RsaPssUsingSha{keySizeBits: 256, saltSizeBytes: 32})
RegisterJws(&RsaPssUsingSha{keySizeBits: 384, saltSizeBytes: 48})
RegisterJws(&RsaPssUsingSha{keySizeBits: 512, saltSizeBytes: 64})
}
// RSA with PSS using SHA signing algorithm implementation
type RsaPssUsingSha struct{
keySizeBits int
saltSizeBytes int
}
func (alg *RsaPssUsingSha) Name() string {
switch alg.keySizeBits {
case 256: return PS256
case 384: return PS384
default: return PS512
}
}
func (alg *RsaPssUsingSha) Verify(securedInput, signature []byte, key interface{}) error {
if pubKey,ok:=key.(*rsa.PublicKey);ok {
return rsa.VerifyPSS(pubKey, hashFunc(alg.keySizeBits), sha(alg.keySizeBits, securedInput), signature, &rsa.PSSOptions{SaltLength:alg.saltSizeBytes})
}
return errors.New("RsaPssUsingSha.Verify(): expects key to be '*rsa.PublicKey'")
}
func (alg *RsaPssUsingSha) Sign(securedInput []byte, key interface{}) (signature []byte, err error) {
if privKey,ok:=key.(*rsa.PrivateKey);ok {
return rsa.SignPSS(rand.Reader, privKey, hashFunc(alg.keySizeBits), sha(alg.keySizeBits, securedInput), &rsa.PSSOptions{SaltLength:alg.saltSizeBytes})
}
return nil,errors.New("RsaPssUsingSha.Sign(): expects key to be '*rsa.PrivateKey'")
}
Version data entries
16 entries across 16 versions & 1 rubygems