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fix C1（uncompressed public key）format for sm2 standard #16

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fix C1（uncompressed public key）format for sm2 standard #16

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4 changes: 4 additions & 0 deletions src/sm2/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,10 @@ function doDecrypt(encryptData, privateKey, cipherMode = 1) {

privateKey = new BigInteger(privateKey, 16)

if (encryptData.substr(0, 2) === '04') {
encryptData = encryptData.substring(2)
}

const c1X = encryptData.substr(0, 64)
const c1Y = encryptData.substr(0 + c1X.length, 64)
const c1Length = c1X.length + c1Y.length
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7 changes: 1 addition & 6 deletions src/sm2/sm2.js
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Expand Up @@ -39,16 +39,11 @@ class SM2Cipher {
initEncipher(userKey) {
const keypair = _.generateKeyPairHex()
const k = new BigInteger(keypair.privateKey, 16)
let publicKey = keypair.publicKey

this.p2 = userKey.multiply(k) // [k](Pb)
this.reset()

if (publicKey.length > 128) {
publicKey = publicKey.substr(publicKey.length - 128)
}

return publicKey
return keypair.publicKey
}

encryptBlock(data) {
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