miniproto.crypto.native.aes_256_cbc_decrypt

miniproto.crypto.native.aes_256_cbc_decrypt

aes_256_cbc_decrypt(ciphertext: BytesLike, key: bytes, iv: bytes) -> bytes

Decrypt block-aligned AES-256-CBC bytes without unpadding.

Parameters:

• ciphertext (BytesLike) – Bytes whose length is a multiple of 16.
• key (bytes) – Exactly 32 bytes of AES-256 key material.
• iv (bytes) – Exactly 16 bytes of initialization value.

Returns:

• bytes – Raw plaintext equal in length to ciphertext.

Raises:

• ValueError – If key/IV lengths or block alignment are invalid.

This operation does not authenticate ciphertext or validate a padding scheme; callers must supply the applicable integrity and decoding checks.