func main() {
input := "YELLOW SUBMARINE"
result := conversion.PadPKCS([]byte(input), 20)
fmt.Println("Input:", input)
fmt.Println("Output:", string(result))
}
func (e *Block) EncryptCBC(input, iv []byte) ([]byte, error) {
input = conversion.PadPKCS(input, e.BlockSize)
length := len(input)
ciphertext := make([]byte, length)
if len(iv) != e.BlockSize {
return ciphertext, IVSizeError
}
// Loop over each block
for a, b := 0, e.BlockSize; b <= length; a, b = a+e.BlockSize, b+e.BlockSize {
plainslice := input[a:b]
cipherslice := make([]byte, e.BlockSize)
cipherslice, err := e.EncryptCBCBlock(plainslice, iv)
if err != nil {
return ciphertext, err
}
copy(ciphertext[a:b], cipherslice)
iv = cipherslice
}
return ciphertext, nil
}
func (e *Block) EncryptECB(input []byte) ([]byte, error) {
input = conversion.PadPKCS(input, e.BlockSize)
length := len(input)
ciphertext := make([]byte, length)
// Loop over each block
for a, b := 0, e.BlockSize; b <= length; a, b = a+e.BlockSize, b+e.BlockSize {
cipherslice := ciphertext[a:b]
cipherslice, err := e.EncryptECBBlock(input[a:b])
if err != nil {
return ciphertext, err
}
copy(ciphertext[a:b], cipherslice)
}
return ciphertext, nil
}