记录一次由JAVA 到 Golang的加密的转换 JAVA code
import javax.crypto.Cipher;
public static String encode(String reqstr, String reqkey) throws Exception { Cipher cipher = Cipher.getInstance("AES/ECB/PKCS7Padding", "BC"); SecretKeySpec keySpec = new SecretKeySpec(reqkey.getBytes("UTF-8"), "AES"); cipher.init(1, keySpec); byte[] result = cipher.doFinal(reqstr.getBytes("UTF-8")); return new String(Base64.encode(result)); }
public static String decodeByAES(String reskey, String resstr) throws Exception { byte[] responseByte = Base64.decode(resstr); Cipher cipher = Cipher.getInstance("AES/ECB/PKCS7Padding", "BC"); SecretKeySpec keySpec = new SecretKeySpec(hex2bytes(reskey), "AES"); cipher.init(2, keySpec); byte[] decoded = cipher.doFinal(responseByte); return new String(decoded, "UTF-8"); }
Go code
import ( "bytes" "crypto/aes" "crypto/cipher" ) // PKCS7加填充/和PKCS5填充一样,只是填充字段多少的区别 func PKCS7Padding(cipherText []byte, blockSize int) []byte { padding := blockSize - len(cipherText)%blockSize padText := bytes.Repeat([]byte{byte(padding)}, padding) return append(cipherText, padText...) } // PKCS7解填充/和PKCS5填充一样,只是填充字段多少的区别 func PKCS7UnPadding(encrypt []byte) []byte { length := len(encrypt) unPadding := int(encrypt[length-1]) return encrypt[:(length - unPadding)] } // AES/ECB/PKCS7模式加密--签名加密方式 func AesECBEncrypt(data, key []byte) ([]byte, error) { block, err := aes.NewCipher(key) if err != nil { return []byte{}, err } ecb := NewECBEncryptEr(block) // 加PKCS7填充 content := PKCS7Padding(data, block.BlockSize()) encryptData := make([]byte, len(content)) // 生成加密数据 ecb.CryptBlocks(encryptData, content) return encryptData, nil } // AES/ECB/PKCS7模式解密--签名解密方式 func AesECBDecrypt(data, key []byte) ([]byte, error) { block, err := aes.NewCipher(key) if err != nil { return []byte{}, err } ecb := NewECBDecryptEr(block) retData := make([]byte, len(data)) ecb.CryptBlocks(retData, data) // 解PKCS7填充 retData = PKCS7UnPadding(retData) return retData, nil } type ecb struct { b cipher.Block blockSize int } func newECB(b cipher.Block) *ecb { return &ecb{ b: b, blockSize: b.BlockSize(), } } type ecbEncryptEr ecb func NewECBEncryptEr(b cipher.Block) cipher.BlockMode { return (*ecbEncryptEr)(newECB(b)) } func (x *ecbEncryptEr) BlockSize() int { return x.blockSize } func (x *ecbEncryptEr) CryptBlocks(dst, src []byte) { if len(src)%x.blockSize != 0 { panic("crypto/cipher: input not full blocks") } if len(dst) < len(src) { panic("crypto/cipher: output smaller than input") } for len(src) > 0 { x.b.Encrypt(dst, src[:x.blockSize]) src = src[x.blockSize:] dst = dst[x.blockSize:] } } // ecb解密方法 type ecbDecryptEr ecb func NewECBDecryptEr(b cipher.Block) cipher.BlockMode { return (*ecbDecryptEr)(newECB(b)) } func (x *ecbDecryptEr) BlockSize() int { return x.blockSize } func (x *ecbDecryptEr) CryptBlocks(dst, src []byte) { if len(src)%x.blockSize != 0 { panic("crypto/cipher: input not full blocks") } if len(dst) < len(src) { panic("crypto/cipher: output smaller than input") } for len(src) > 0 { x.b.Decrypt(dst, src[:x.blockSize]) src = src[x.blockSize:] dst = dst[x.blockSize:] } }