function // specified in PKCS #1 v2.1. func mgf1XOR(out []byte, hash fips140.Hash, seed []byte) { var counter [4]byte var digest []byte done := 0 for done < len(out) { hash.Reset() hash.Write(seed) hash.Write(counter[0:4]) digest = hash.Sum(digest[:0]) for i := 0; i < len(digest) && done < len(out); i++ { out[done] ^= digest[i] done++ } incCounter(&counter) } } func emsaPSSEncode(mHash []byte, emBits int, salt []byte, hash fips140.Hash) ([]byte, error) { // See RFC 8017, Section 9.1.1. hLen := hash.Size()...

MGF1 function // specified in PKCS #1 v2.1. func mgf1XOR(out []byte, hash hash.Hash, seed []byte) { var counter [4]byte var digest []byte done := 0 for done < len(out) { hash.Reset() hash.Write(seed) hash.Write(counter[0:4]) digest = hash.Sum(digest[:0]) for i := 0; i < len(digest) && done < len(out); i++ { out[done] ^= digest[i] done++ } incCounter(&counter) } } func emsaPSSEncode(mHash []byte, emBits int, salt []byte, hash hash.Hash) ([]byte, error) { // See RFC 8017, Section 9.1.1. hLen := hash.Size()...