来自：https://nodejs.org/api/crypto.html#crypto_class_ecdh
const alice_key = alice.generateKeys();
将生成随机私钥和相应的公钥。
但我想设置自己的私钥：e8f32e723decf ...
如果我使用：
alice.setPrivateKey("e8f32e723decf");
对象alice_key不受影响，所以稍后：
const bob_secret = bob.computeSecret(alice_key, 'hex', 'hex');
会错的。有没有办法做类似的事情：
const alice_key = alice.generateKeys("e8f32e723decf");
答案 0 :(得分：2)
首先，我想你的十六进制字符串缺少一个前导0e8f32e723decf，所以它应该是ECDH.setPrivateKey()。
那么它取决于你的node.js版本，
const crypto = require('crypto');
// this is just to generate a private/public key pair
const warmup = crypto.createECDH('secp521r1');
warmup.generateKeys();
const warmup_private_key = warmup.getPrivateKey();
const warmup_public_key = warmup.getPublicKey();
// convert it to hex string to match the example
// you would store these strings somewhere I guess
private_key = warmup_private_key.toString('hex');
public_key = warmup_public_key.toString('hex');
// now let's create the ciphers
const alice = crypto.createECDH('secp521r1');
const bob = crypto.createECDH('secp521r1');
----------
// Bob gets created keys
bob.generateKeys();
// Generate Alice's keys - that's really annoying since you will override it
alice.generateKeys();
// now set the keys:
alice.setPrivateKey(private_key, "hex");
alice.setPublicKey(public_key, "hex");
// Exchange and generate the secret...
const alice_secret = alice.computeSecret(bob.getPublicKey());
const bob_secret = bob.computeSecret(alice.getPublicKey());
console.log("alice's shared secret: " + alice_secret.toString('hex') + "\n");
console.log("bob's shared secret: " + bob_secret.toString('hex') + "\n");
console.log('shared secrets match: ' + alice_secret.equals(bob_secret));
的实现从5.1更改为5.2
const crypto = require('crypto');
const alice = crypto.createECDH('secp256k1');
const bob = crypto.createECDH('secp256k1');
bob.generateKeys();
alice.setPrivateKey('0e8f32e723decf', 'hex');
const alice_secret = alice.computeSecret(bob.getPublicKey());
const bob_secret = bob.computeSecret(alice.getPublicKey());
console.log(alice_secret.equals(bob_secret));
left outer join ( SELECT acd_aad_id, max(acd_id) max_acd_id FROM daybreak.contract_details lastexpire WHERE
lastexpire.acd_itemization_tcd_code in ('IIN_5') and
lastexpire.acd_expiry_dt between to_date('2014-01-01','yyyy-mm-dd')
and to_date('2014-02-01','yyyy-mm-dd') and
lastexpire.acd_term > 0 ) max_ids ON max_ids.acd_aad_id = aac_aad_id
left outer join
daybreak.contract_details expiring on
expiring.acd_id = max_ids.acd_aad_id