Mercurial > dropbear
view libtomcrypt/src/pk/dsa/dsa_make_key.c @ 1638:315fcba6960e
dropbearconvert: keyimport.c: fix BER encoding of secp521r1 keys (#69)
keysizes >= 128 octets will be encoded with a 3 byte header
which must be accounted by the optional-header
Reproduce:
master:~/build/dropbear$ ./dropbearkey -t ecdsa -s 521 -f K
Generating 521 bit ecdsa key, this may take a while...
master:~/build/dropbear$ ./dropbearconvert d o K L
Key is a ecdsa-sha2-nistp521 key
Wrote key to 'L'
master:~/build/dropbear$ openssl ec < L
read EC key
unable to load Key
139769806448384:error:0D07209B:asn1 encoding routines:ASN1_get_object:too long:crypto/asn1/asn1_lib.c:91:
author | Christian Hohnstädt <christian@hohnstaedt.de> |
---|---|
date | Wed, 20 Mar 2019 16:42:47 +0100 |
parents | 6dba84798cd5 |
children |
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis * * LibTomCrypt is a library that provides various cryptographic * algorithms in a highly modular and flexible manner. * * The library is free for all purposes without any express * guarantee it works. */ #include "tomcrypt.h" /** @file dsa_make_key.c DSA implementation, generate a DSA key */ #ifdef LTC_MDSA /** Old-style creation of a DSA key @param prng An active PRNG state @param wprng The index of the PRNG desired @param group_size Size of the multiplicative group (octets) @param modulus_size Size of the modulus (octets) @param key [out] Where to store the created key @return CRYPT_OK if successful. */ int dsa_make_key(prng_state *prng, int wprng, int group_size, int modulus_size, dsa_key *key) { int err; if ((err = dsa_generate_pqg(prng, wprng, group_size, modulus_size, key)) != CRYPT_OK) { return err; } if ((err = dsa_generate_key(prng, wprng, key)) != CRYPT_OK) { return err; } return CRYPT_OK; } #endif /* ref: $Format:%D$ */ /* git commit: $Format:%H$ */ /* commit time: $Format:%ai$ */