Libgcrypt

In this article we are going to address the topic of Libgcrypt, a topic that has generated interest and debate in contemporary society. Libgcrypt has been the object of study, reflection and controversy, and its impact has been felt in various areas, from the personal to the global level. Throughout this article, we will explore the different aspects related to Libgcrypt, from its origin and evolution to its relevance in today's world. We will also analyze the various opinions and positions that exist around Libgcrypt, as well as the implications it has on people's lives and society in general. Through an interdisciplinary approach, this article seeks to provide a comprehensive and in-depth vision of Libgcrypt, with the aim of contributing to the understanding and reflection on this topic that is so relevant today.

Libgcrypt
Original author(s)Werner Koch
Developer(s)GnuPG community[1]
Stable release(s) [±]
stable1.11.0 / June 19, 2024 (2024-06-19)[2]
LTS1.8.11 / November 16, 2023 (2023-11-16)[3]
Repository
Written inC
Operating systemCross-platform
TypeCryptographic library
LicenseGNU Lesser General Public License (LGPLv2.1+) / GNU General Public License (GPLv2+)[4]
Websitegnupg.org/software/libgcrypt/

Libgcrypt is a cryptography library developed as a separated module of GnuPG.[5] It can also be used independently of GnuPG, but depends on its error-reporting library Libgpg-error.[6]

It provides functions for all fundamental cryptographic building blocks:

Primitive or Operation Algorithms or Implementation[7]
symmetric ciphers:[8] AES (128, 192, 256 bits), DES, 3DES, IDEA, CAST5, Blowfish, Twofish (128, 256 bits), Ron's Cipher 2 / RC2 (40, 128 bits), ARCfour / RC4, SEED (RFC 4269), Serpent (128, 192, 256 bits), Camellia (128, 192, 256 bits), Salsa20, Salsa20/12, ChaCha20, GOST 28147-89 (RFC 5830) / GOST R 34.12-2015 (Magma: RFC 8891 & Kuznyechik: RFC 7801), SM4, ARIA
cipher modes:[9] ECB, CFB, CBC, OFB, CTR, CCM, GCM, OCB, EAX, XTS, Stream, AES Key Wrap (RFC 3394), AES Key Wrap with padding (RFC 5649), SIV (RFC 5297) and GCM-SIV (RFC 8452)
public key algorithms:[10][11] RSA, ElGamal, DSA, ECDSA, EdDSA, Ed448, DH, EDH, ECDH
hash algorithms:[12] MD2, MD4, MD5, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512, SHA3-224, SHA3-256, SHA3-384, SHA3-512, SHAKE128, SHAKE256, RIPEMD-160, TIGER/192, TIGER1, TIGER2, Whirlpool, CRC-24 (as in RFC 2440), CRC-32 (as in ISO 3309), CRC-32 (as in RFC 1510), GOST R 34.11-94 / GOST 34.311-95, GOST R 34.11-2012 (Stribog) / RFC 6986, BLAKE2b (128, 160, 224, 256 Bits), BLAKE2s (160, 256, 384, 512 Bits), SM3[13]
message authentication codes (MACs):[14] HMAC for all hash algorithms, CMAC for all cipher algorithms, GMAC for some cipher algorithms, Poly1305
key derivation functions (KDFs):[15] S2K (as in RFC 4880: simple, salted, iterated+salted), PBKDF2, SCRYPT, Argon2d, Argon2i, Argon2id, Balloon
elliptic curves: NIST (P-256, P-384, P-521), SECG (secp256k1), ECC Brainpool / RFC 5639 (P256r1, P384r1, P512r1), Bernstein (Curve25519, Curve448), GOST R 34.10-2012 (RFC 7091), SM2[16]

Libgcrypt features its own multiple precision arithmetic implementation, with assembler implementations for a variety of processors, including Alpha, AMD64, HP PA-RISC, i386, i586, M68K, MIPS 3, PowerPC, and SPARC. It also features an entropy gathering utility, coming in different versions for Unix-like and Windows machines.

Usually multiple, stable branches of Libgcrypt are maintained in parallel; since 2022-03-28 this is the Libgrypt 1.10 branch as stable branch, plus the 1.8 branch as LTS ("long-term support") branch, which will be maintained at least until 2024-12-31.[17]

See also

References

  1. ^ "AUTHORS". Retrieved 2021-02-09.
  2. ^ "Libgcrypt 1.11.0 released". dev.gnupg.org. 2024-06-19. Retrieved 2024-06-20.
  3. ^ "Libgcrypt 1.8.11 released". dev.gnupg.org. 2023-11-16. Retrieved 2023-11-16.
  4. ^ "Copying". Libgcrypt. 2021-02-04. Retrieved 2021-02-09.
  5. ^ Koch, Werner (1998-12-04). "libgcrypt" (Mailing list). gnupg-devel. Retrieved 2017-08-30.
  6. ^ "Libgpg-error". GnuPG software. 2017-03-22. Retrieved 2017-12-13.
  7. ^ "src/cipher.h". 2017-06-16. Retrieved 2017-08-30.
  8. ^ "Available ciphers". The Libgcrypt Reference Manual. 2017-08-27. Retrieved 2017-08-30.
  9. ^ "Available cipher modes". The Libgcrypt Reference Manual. 2017-08-27. Retrieved 2017-08-30.
  10. ^ "Available algorithms". The Libgcrypt Reference Manual. 2017-08-27. Retrieved 2017-08-30.
  11. ^ "Cryptographic Functions". The Libgcrypt Reference Manual. 2017-08-27. Retrieved 2017-08-30.
  12. ^ "Available hash algorithms". The Libgcrypt Reference Manual. 2017-08-27. Retrieved 2017-08-30.
  13. ^ Shen, Sean; Lee, Xiaodong; Tse, Ronald Henry; Kit, Wong Wai; Yang, Paul (2018-01-08). "The SM3 Cryptographic Hash Function". Internet Engineering Task Force. Retrieved 2023-11-16.
  14. ^ "Available MAC algorithms". The Libgcrypt Reference Manual. 2017-08-27. Retrieved 2017-08-30.
  15. ^ "Key Derivation". The Libgcrypt Reference Manual. 2017-08-27. Retrieved 2017-08-30.
  16. ^ Shen, Sean; Lee, Xiaodong (2014-02-14). "SM2 Digital Signature Algorithm". Internet Engineering Task Force. Retrieved 2023-11-16.
  17. ^ "End-of-life dates for GnuPG and Libgcrypt". GnuPG software. 2021-02-04. Retrieved 2021-02-07.