node.JS的加密模塊crypto提供了 HTTP 或 HTTPS 連接過程中封裝安全憑證的方法。也提供了 OpenSSL 的哈希，hmac, 加密（cipher）, 解密（decipher）, 簽名（sign） 和 驗證（verify） 方法的封裝

crypto模塊使用方法

crypto.setEngine(engine[, flags])

為某些/所有 OpenSSL 函數加載并設置引擎（根據參數 flags 來設置）。

engine 可能是 id，或者是指向引擎共享庫的路徑。

flags是可選參數，默認值是ENGINE_METHOD_ALL ，可以是以下一個或多個參數的組合(在constants里定義)

ENGINE_METHOD_RSA

ENGINE_METHOD_DSA

ENGINE_METHOD_DH

ENGINE_METHOD_RAND

ENGINE_METHOD_ECDH

ENGINE_METHOD_ECDSA

ENGINE_METHOD_CIPHERS

ENGINE_METHOD_DIGESTS

ENGINE_METHOD_STORE

ENGINE_METHOD_PKEY_METH

ENGINE_METHOD_PKEY_ASN1_METH

ENGINE_METHOD_ALL

ENGINE_METHOD_NONE

crypto.getCiphers()

返回支持的加密算法名數組

var crypto = require('crypto');console.log(crypto.getCiphers());//[ 'aes-128-cbc', 'aes-128-ccm', 'aes-128-cfb', 'aes-128-cfb1', 'aes-128-cfb8', 'aes-128-ctr', 'aes-128-ecb', 'aes-128-gcm', 'aes-128-ofb', 'aes-128-xts', 'aes-192-cbc', 'aes-192-ccm', 'aes-192-cfb', 'aes-192-cfb1', 'aes-192-cfb8', 'aes-192-ctr', 'aes-192-ecb', 'aes-192-gcm', 'aes-192-ofb', 'aes-256-cbc', 'aes-256-ccm', 'aes-256-cfb', 'aes-256-cfb1', 'aes-256-cfb8', 'aes-256-ctr', 'aes-256-ecb', 'aes-256-gcm', 'aes-256-ofb', 'aes-256-xts', 'aes128', 'aes192', 'aes256', 'bf', 'bf-cbc', 'bf-cfb', 'bf-ecb', 'bf-ofb', 'blowfish', 'camellia-128-cbc', 'camellia-128-cfb', 'camellia-128-cfb1', 'camellia-128-cfb8', 'camellia-128-ecb', 'camellia-128-ofb', 'camellia-192-cbc', 'camellia-192-cfb', 'camellia-192-cfb1', 'camellia-192-cfb8', 'camellia-192-ecb', 'camellia-192-ofb', 'camellia-256-cbc', 'camellia-256-cfb', 'camellia-256-cfb1', 'camellia-256-cfb8', 'camellia-256-ecb', 'camellia-256-ofb', 'camellia128', 'camellia192', 'camellia256', 'cast', 'cast-cbc', 'cast5-cbc', 'cast5-cfb', 'cast5-ecb', 'cast5-ofb', 'des', 'des-cbc', 'des-cfb', 'des-cfb1', 'des-cfb8', 'des-ecb', 'des-ede', 'des-ede-cbc', 'des-ede-cfb', 'des-ede-ofb', 'des-ede3', 'des-ede3-cbc', 'des-ede3-cfb', 'des-ede3-cfb1', 'des-ede3-cfb8', 'des-ede3-ofb', 'des-ofb', 'des3', 'desx', 'desx-cbc', 'id-aes128-CCM', 'id-aes128-GCM', 'id-aes128-wrap', 'id-aes192-CCM', 'id-aes192-GCM', 'id-aes192-wrap', 'id-aes256-CCM', 'id-aes256-GCM', 'id-aes256-wrap', 'id-smime-alg-CMS3DESwrap', 'idea', 'idea-cbc', 'idea-cfb', 'idea-ecb', 'idea-ofb', ... 15 more items ]

crypto.getCiphers()

返回支持的哈希算法名數組。

var crypto = require('crypto');console.log(crypto.getHashes());//[ 'DSA', 'DSA-SHA', 'DSA-SHA1', 'DSA-SHA1-old', 'RSA-MD4', 'RSA-MD5', 'RSA-MDC2', 'RSA-RIPEMD160', 'RSA-SHA', 'RSA-SHA1', 'RSA-SHA1-2', 'RSA-SHA224', 'RSA-SHA256', 'RSA-SHA384', 'RSA-SHA512', 'dsaEncryption', 'dsaWithSHA', 'dsaWithSHA1', 'dss1', 'ecdsa-with-SHA1', 'md4', 'md4WithRSAEncryption', 'md5', 'md5WithRSAEncryption', 'mdc2', 'mdc2WithRSA', 'ripemd', 'ripemd160', 'ripemd160WithRSA', 'rmd160', 'sha', 'sha1', 'sha1WithRSAEncryption', 'sha224', 'sha224WithRSAEncryption', 'sha256', 'sha256WithRSAEncryption', 'sha384', 'sha384WithRSAEncryption', 'sha512', 'sha512WithRSAEncryption', 'shaWithRSAEncryption', 'ssl2-md5', 'ssl3-md5', 'ssl3-sha1', 'whirlpool' ]