Add new prime.

relic-toolkit · Nov 28, 2024 · 3b9a4a8 · 3b9a4a8
1 parent be124f9
commit 3b9a4a8
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diff --git a/include/relic_fp.h b/include/relic_fp.h
@@ -84,6 +84,8 @@ enum {
 	PRIME_22605,
 	/* Curve1174 251-bit prime modulus. */
 	PRIME_25109,
+	/* SQIsign lvl1 251-bit prime modulus. */
+	SQI_251,
 	/** Prime with high 2-adicity for curve Tweedledum. */
 	PRIME_H2ADC,
 	/** Curve25519 255-bit prime modulus. */

diff --git a/src/fp/relic_fp_param.c b/src/fp/relic_fp_param.c
@@ -215,6 +215,12 @@ void fp_param_set(int param) {
 				bn_sub_dig(p, p, 9);
 				fp_prime_set_dense(p);
 				break;
+			case SQI_251:
+				bn_set_2b(p, 248);
+				bn_mul_dig(p, p, 5);
+				bn_sub_dig(p, p, 1);
+				fp_prime_set_dense(p);
+				break;
 #elif FP_PRIME == 254
 			case BN_254:
 				/* x = -(2^62 + 2^55 + 1). */
@@ -774,6 +780,8 @@ int fp_param_set_any_pmers(void) {
 	fp_param_set(NIST_192);
 #elif FP_PRIME == 224
 	fp_param_set(NIST_224);
+#elif FP_PRIME == 251
+	fp_param_set(SQI_251);
 #elif FP_PRIME == 255
 	fp_param_set(PRIME_25519);
 #elif FP_PRIME == 256