sha1_init
ret = sha1_init(&(ctx->sha1ctx)); EG(ret, err);
ret = sha1_init(&ctx); EG(ret, err);
ret = sha1_init(&ctx); EG(ret, err);
ATTRIBUTE_WARN_UNUSED_RET int sha1_init(sha1_context *ctx);
LEGACY_EVP_MD_METH_TABLE(sha1_init, sha1_update, sha1_final, sha1_int_ctrl,
sha1_init(ctx);
extern void sha1_init(struct sha1_ctxt *);
#define SHA1Init(x) sha1_init((x))
#define SHA1_Init (mac_veriexec_fpop_init_t) sha1_init