go 中的 aes 加密方法
在 go 编程语言中,可以借助 crypto/aes 和 encoding/base64 库轻松地对数据进行 aes 加密。
以下代码展示了一种实现 aes/ecb/nopadding 加密的方法:
package main import ( "crypto/aes" "encoding/base64" "log" ) func main() { str := []byte("406bf0ad11310101220213481000320000") key := []byte("er2fb6ts3ecx") encrypted, err := aesencryptecb(str, key) if err != nil { log.fatal(err) } decrypted, err := aesdecryptecb(encrypted, key) if err != nil { log.fatal(err) } log.println("encrypted:", encrypted) log.println("decrypted:", string(decrypted)) } func aesencryptecb(origdata []byte, key []byte) (string, error) { cipher, err := aes.newcipher(generatekey(key)) if err != nil { return "", err } length := (len(origdata) + aes.blocksize) / aes.blocksize plain := make([]byte, length*aes.blocksize) copy(plain, origdata) encrypted := make([]byte, len(plain)) // block encryption for bs, be := 0, cipher.blocksize(); bs <= len(origdata); bs, be = bs+cipher.blocksize(), be+cipher.blocksize() { cipher.encrypt(encrypted[bs:be], plain[bs:be]) } return base64.stdencoding.encodetostring(encrypted), nil } func aesdecryptecb(str string, key []byte) ([]byte, error) { encrypted, err := base64.stdencoding.decodestring(str) if err != nil { return nil, err } cipher, err := aes.newcipher(generatekey(key)) if err != nil { return nil, err } decrypted := make([]byte, len(encrypted)) for bs, be := 0, cipher.blocksize(); bs < len(encrypted); bs, be = bs+cipher.blocksize(), be+cipher.blocksize() { cipher.decrypt(decrypted[bs:be], encrypted[bs:be]) } trim := 0 if len(decrypted) > 0 { trim = len(decrypted) - int(decrypted[len(decrypted)-1]) } return decrypted[:trim], nil } func generatekey(key []byte) (genkey []byte) { genkey = make([]byte, 16) copy(genkey, key) for i := 16; i < len(key); { for j := 0; j < 16 && i < len(key); j, i = j+1, i+1 { genkey[j] ^= key[i] } } return genkey }
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以下是使用此方法加密和解密数据的示例:
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str := []byte("406bf0ad11310101220213481000320000") key := []byte("er2fb6ts3ecx") encrypted, err := aesencryptecb(str, key) if err != nil { log.fatal(err) } decrypted, err := aesdecryptecb(encrypted, key) if err != nil { log.fatal(err) } log.println("encrypted:", encrypted) log.println("decrypted:", string(decrypted))
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输出:
Encrypted: rebZn7aj61hD3lfsUrhwFgVzPg4yYo9aseP/a4sNTRIh/Vtb0mziFfoHdOZBZ5uj Decrypted: 406BF0AD11310101220213481000320000
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