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v2fly/common/crypto/aes.go
2016-12-21 15:37:16 +01:00

27 lines
761 B
Go

package crypto
import (
"crypto/aes"
"crypto/cipher"
)
// NewAesDecryptionStream creates a new AES encryption stream based on given key and IV.
// Caller must ensure the length of key and IV is either 16, 24 or 32 bytes.
func NewAesDecryptionStream(key []byte, iv []byte) cipher.Stream {
aesBlock, err := aes.NewCipher(key)
if err != nil {
panic(err)
}
return cipher.NewCFBDecrypter(aesBlock, iv)
}
// NewAesEncryptionStream creates a new AES description stream based on given key and IV.
// Caller must ensure the length of key and IV is either 16, 24 or 32 bytes.
func NewAesEncryptionStream(key []byte, iv []byte) cipher.Stream {
aesBlock, err := aes.NewCipher(key)
if err != nil {
panic(err)
}
return cipher.NewCFBEncrypter(aesBlock, iv)
}