goencryption

中文说明

install

go get github.com/agclqq/goencryption

summary

Supports symmetric encryption and asymmetric encryption algorithms.

symmetric encryption

• aes
• des
• 3des

asymmetric encryption

• rsa

usage

symmetric encryption

generic methods

EasyEncrypt(easyType, plaintext, key, iv)
EasyDecrypt(easyType, ciphertext, key, iv)

The parameter easyType should have a format like this:cryptoType/mode/padding or cryptoType/mode/padding/transcode

Note: Do not use AES and PKCS5 together. The block size of AES is 16, and the complement length needs to be 16, while the length of PKCS5 is 8. For example:

EasyEncrypt("des/CFB/Pkcs7/Base64", plaintext, key, iv)
EasyDecrypt("des/CFB/Pkcs7/Base64", ciphertext, key, iv)

EasyEncrypt("aes/CTR/Pkcs7", plaintext, key, iv)
EasyDecrypt("aes/CTR/Pkcs7", ciphertext, key, iv)

EasyEncrypt("3des/ECB/Pkcs5/Hex", plaintext, key, iv)
EasyDecrypt("3des/ECB/Pkcs5/Hex", ciphertext, key, iv)

The core approach to implementation is Encrypt() and Decrypt(). All other methods are facade.

about padding

• noPadding: The data must be must be an integer multiple of the block
• zeorPadding: It's going to fill in with zeros. If the original data ends in 0, there is a problem.
• pkcs5Padding: The complement length is 8, which can be problematic in some cases
• pkcs7Padding: Pkcs5Padding superset.Complement length is dynamic.

asymmetric encryption

Generate both private and public keys

GenKeys(bits)

Only the private key is generated

GenPrvKey(bits)

Generate a public key from a private key

GenPubKeyFromPrvKey(prvKey)

Public key encryption private key decryption

PubKeyEncrypt(pubKey, plainText)
PrvKeyDecrypt(prvKey, cipherText)

Private key signature, public key verification signature

PrvKeySign(prvKey, plainText, hash)
PubKeyVerifySign(pubKey, plainText, sign, hash)