32 lines
567 B
Go
32 lines
567 B
Go
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package utils
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import (
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"crypto/aes"
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)
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func AesEcbDecrypt(key []byte, src []byte) ([]byte, error) {
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block, err := aes.NewCipher(key)
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if err != nil {
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return nil, err
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}
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dst := make([]byte, 0, len(src))
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tmp := make([]byte, aes.BlockSize)
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for i := 0; i < len(src); i += aes.BlockSize {
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block.Decrypt(tmp, src[i:i+aes.BlockSize])
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if i == len(src)-aes.BlockSize {
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pad := int(tmp[len(tmp)-1])
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if pad > aes.BlockSize {
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pad = 0
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}
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dst = append(dst, tmp[:aes.BlockSize-pad]...)
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} else {
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dst = append(dst, tmp...)
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}
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}
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return dst, nil
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}
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