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package crypto
// NewBlobBuffer returns a buffer that is large enough to hold a blob of size
// plaintext bytes, including the crypto overhead.
func NewBlobBuffer(size int) []byte {
return make([]byte, size, size+Extension)
}
// PlaintextLength returns the plaintext length of a blob with ciphertextSize
// bytes.
func PlaintextLength(ciphertextSize int) int {
return ciphertextSize - Extension
}
// CiphertextLength returns the encrypted length of a blob with plaintextSize
// bytes.
func CiphertextLength(plaintextSize int) int {
return plaintextSize + Extension
}
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