Noteworthy changes in version 1.9.3 (2021-04-19)

• Bug fixes:
  • Fix build problems on i386 using gcc-4.7.
  • Fix checksum calculation in OCB decryption for AES on s390. [T5356]
  • Fix a regression in gcry_mpi_ec_add related to certain usages of curve 25519. [T5372]
  • Fix a symbol not found problem on Apple M1. [T5370]
  • Fix for Apple iOS getentropy peculiarity. [T5375]
  • Make keygrip computation work for compressed points. [T4961]

• Performance:
  • Add x86_64 VAES/AVX2 accelerated implementation of Camellia. [rC0e7e60241a]
  • Add x86_64 VAES/AVX2 accelerated implementation of AES. [rCe72498a54f]
  • Add VPMSUMD acceleration for GCM mode on PPC. [T5040]

• Internal changes.
  • Harden MPI conditional code against EM leakage. [T5330]
  • Harden Elgamal by introducing exponent blinding. [T5328]
  • Fix memory leaks in the error code paths of EdDSA. [T5385]

(prev: T5276 next: T5402 branch-1.10: T5691)