BCArchive Specifications and Limitations
BCArchive utilizes the following encryption algorithms, standards and specifications:
- Symmetric algorithms: Twofish, Blowfish, Blowfish-448, GOST, Rijndael (AES), Serpent.
- supported algorithms for compatibility with old archives: IDEA, Triple-DES, CAST5.
- Secure Hash Algorithms: SHA-256, SHA-512, SHA3-512, Whirlpool-512, Skein-512.
- supported algorithms for compatibility with old archives: SHA-1, MD5, RIPEMD-160.
- Asymmetric (public/secret key pair) algorithms: RSA, ElGamal / Diffie-Hellman.
- Specifications for public/secret key pair format: PKCS #12, X.509.
- PKCS #5 (recommendations for the implementation of password-based cryptography).
- RFC 2440 specifications for session keys encrypted by symmetric or public key encryption algorithms.
- Compressed and encrypted archive file created by the BCArchive software can store up to 2 Terabytes not compressed data.
- Self-extracted archive file contains all executable code necessary to extract data stored inside the
archive. The code includes corresponding symmetric encryption algorithm, public/secret key algorithm,
secure hash algorithm implementations as well as the code to uncompress data. Size of the code is about
150 Kbytes, hence minimum size of self-extracted archive is about 150 Kbytes. The limitation does not
concern regular (not self-extracted) archive files.