6  * This is a host tool that is intended to be used to take the HMAC digest of
12  * Note that the peculiar way an HMAC is being used as a digest with a public
26 #include <openssl/hmac.h>
117 static void hmac_section(HMAC_CTX *hmac, const char *start, const char *end)  in hmac_section()  argument
122 	HMAC_Update(hmac, start_addr, end_addr - start_addr);  in hmac_section()
132 	HMAC_CTX *hmac;  in main()  local
174 		fprintf(stderr, "failed to locate HMAC key in binary\n");  in main()
180 		fprintf(stderr, "failed to locate HMAC digest in binary\n");  in main()
184 	hmac = HMAC_CTX_new();  in main()
185 	HMAC_Init_ex(hmac, hmac_key, strlen(hmac_key), EVP_sha256(), NULL);  in main()
187 	hmac_section(hmac, "__fips140_text_start", "__fips140_text_end");  in main()
188 	hmac_section(hmac, "__fips140_rodata_start", "__fips140_rodata_end");  in main()
190 	HMAC_Final(hmac, dg, &dglen);  in main()