This series of patches adds support for NIST P521 curve to ecdsa and ecdh. Test cases are added to both modules. An issue with the current code in ecdsa and ecdh is that it assumes that input arrays providing key coordinates for example are arrays of digits (a 'digit' is a 'u64'). This works well for existing curves, such as NIST P192/256/384, but does not work for NIST P521 where coordinates are 8 digits + 2 bytes long. So some of the changes deal with converting byte arrays to digits and digits to byte array. Regards, Stefan Stefan Berger (14): crypto: ecdsa - Convert byte arrays with key coordinates to digits crypto: ecdsa - Adjust tests on length of key material crypto: ecdsa - Adjust res.x mod n for NIST P521 crypto: ecc - Implement vli_mmod_fast_521 for NIST p521 crypto: ecc - For NIST P521 use vli_num_bits to get number of bits crypto: ecc - Add NIST P521 curve parameters crypto: ecdsa - Register NIST P521 and extend test suite x509: Add OID for NIST P521 and extend parser for it crypto: ecdh - Use properly formatted digits to check for valid key crypto: ecc - Implement ecc_digits_to_array to convert digits to byte array crypto: Add nbits field to ecc_curve structure crypto: ecc - Implement and use ecc_curve_get_nbytes to get curve's nbytes crypto: ecdh - Use functions to copy digits from and to array crypto: ecdh - Add support for NIST P521 and add test case crypto/asymmetric_keys/x509_cert_parser.c | 3 + crypto/ecc.c | 71 +++++-- crypto/ecc_curve_defs.h | 45 +++++ crypto/ecdh.c | 59 +++++- crypto/ecdsa.c | 51 ++++- crypto/testmgr.c | 14 ++ crypto/testmgr.h | 225 ++++++++++++++++++++++ include/crypto/ecc_curve.h | 3 + include/crypto/ecdh.h | 1 + include/crypto/internal/ecc.h | 61 +++++- include/linux/oid_registry.h | 1 + 11 files changed, 497 insertions(+), 37 deletions(-) -- 2.43.0