kernel.git/crypto/sm2.c, branch linux-5.13.y

crypto: sm2 - fix a memory leak in sm2

2021-07-14T15:06:44Z

[ Upstream commit 5cd259ca5d466f65ffd21e2e2fa00fb648a8c555 ] SM2 module alloc ec->Q in sm2_set_pub_key(), when doing alg test in test_akcipher_one(), it will set public key for every test vector, and don't free ec->Q. This will cause a memory leak. This patch alloc ec->Q in sm2_ec_ctx_init(). Fixes: ea7ecb66440b ("crypto: sm2 - introduce OSCCA SM2 asymmetric cipher algorithm") Signed-off-by: Hongbo Li Reviewed-by: Tianjia Zhang Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin

crypto: sm2 - remove unnecessary reset operations

2020-10-30T06:35:02Z

This is an algorithm optimization. The reset operation when setting the public key is repeated and redundant, so remove it. At the same time, `sm2_ecc_os2ec()` is optimized to make the function more simpler and more in line with the Linux code style. Signed-off-by: Tianjia Zhang Signed-off-by: Herbert Xu

crypto: sm2 - introduce OSCCA SM2 asymmetric cipher algorithm

2020-09-25T07:48:54Z

This new module implement the SM2 public key algorithm. It was published by State Encryption Management Bureau, China. List of specifications for SM2 elliptic curve public key cryptography: * GM/T 0003.1-2012 * GM/T 0003.2-2012 * GM/T 0003.3-2012 * GM/T 0003.4-2012 * GM/T 0003.5-2012 IETF: https://tools.ietf.org/html/draft-shen-sm2-ecdsa-02 oscca: http://www.oscca.gov.cn/sca/xxgk/2010-12/17/content_1002386.shtml scctc: http://www.gmbz.org.cn/main/bzlb.html Signed-off-by: Tianjia Zhang Tested-by: Xufeng Zhang Signed-off-by: Herbert Xu