如何encryption私钥如OpenSSL?

当我用OpenSSL生成私有椭圆曲线时,使用以下命令:

openssl ecparam -name secp521r1 -genkey -noout -out key.pem 

我得到这样的东西:

 -----BEGIN EC PRIVATE KEY----- MIHbAgEBBEGpyKy6t0i6cEdxETKfsXNmFA4oWLQrM1LaPdfiyGs13+DckCjskukK NlbQYBb7gKIAAqj4vbmdCjTkoxnuXToqRKAHBgUrgQQAI6GBiQOBhgAEAHRbQ/Ow rR0fjiLdS+wHgpGX3kIk1IdJwr6m18k8nkta7d6YCho555Tbru+17zrtEMasd5UH YX8PRRtGaCD29aOzASUXOkwrmth4wLRsDQEe4qWAjATVvbw4LDP9Jz92OFXbEPwR P3uNunAQ2grnBjNCXN5yF49nyK1lSZxscxv+OCM/ -----END EC PRIVATE KEY----- 

它与我使用NodeJS的Crypto模块encryption钥编码器生成的格式相同。

 -----BEGIN EC PRIVATE KEY----- MIHcAgEBBEIBevCX7Zvo2G93UtPEl2ibpz71dXdjN/xMbwZBQwHukZJWwuKtJ8Sm dn21nDV5uEa7mgiBu0X5BVvsN/Wr+TzoAD2gBwYFK4EEACOhgYkDgYYABABaycjM EduL5R+bBY7T5WF+L314mfm2AZkKDs4EDkYWPupzbfE1qsQkjyPjh/JxMRU6nr9w xJ7X9jSA6wy0dHNqSQFP+5SHOuJu32Da21qBIKU9Xaoy0CloGfRjEQAbg5N1h4uw wKdMrY2a34dYn1eEe2YFzHKTFJPzOxyeKsDsFaafng== -----END EC PRIVATE KEY----- 

现在,当我用AES256encryption这个命令

openssl ec -aes256 -in key.pem -out encrypted-key.pem

我明白了

 -----BEGIN EC PRIVATE KEY----- Proc-Type: 4,ENCRYPTED DEK-Info: AES-256-CBC,96218C0F2D6F661750C994B319DD05FB pdk5WCaaLL8+YU27QjHMRgNkNwgPfgqL2ZNx/73pBDiSekfEKn39XrllE+j0lEA/ jNt1v85bBl4GQR97Br1wYl0WyHRTMlJvyc1f+dRIG+Pyu2gt4bdWaXbuajn0suWG EGNPKBQJNvY3+J010FQfVI45puC03gKA910ODSE3igNuAtSxoptmbD9DMr/2hj2y BG1WarSvtX9P/eFw6sLVtou8iAD53lO41SA/ppHAbwuGdFwH9bA/LKlQUEHC3v2J QJmEdt/1wYO4QLtFulDpNVd7nqGd3yn2/sZ1E5XBJ4E= -----END EC PRIVATE KEY----- 

我怎样才能得到与NodeJS'encryption相似的encryption密钥? 换句话说,那是什么格式,以及它是如何encryption的。 使用NodeJS'Crypto做aes-256-cbcencryption是微不足道的,但我不确定密码是如何处理的(希望是pbkdf2)以及如何达到这种格式。 有logging吗?