(H, asn1)
| 63 | return sig; |
| 64 | }; |
| 65 | sign(H, asn1) { |
| 66 | var sig = this._sign(H); |
| 67 | if (asn1) { |
| 68 | return BER.encode([0x30, [0x02, sig.r], [0x02, sig.s]]); |
| 69 | } |
| 70 | else { |
| 71 | var os = new ArrayBuffer(); |
| 72 | return os.concat(Crypt.PKCS1.I2OSP(sig.r, 20), Crypt.PKCS1.I2OSP(sig.s, 20)); |
| 73 | } |
| 74 | }; |
| 75 | _verify(H, r, s) { |
| 76 | // w = 1/s mod q |
| 77 | // u1 = (SHA_1(M) * w) mod q |