implement FieldParameters trait for Secp256r1BaseField struct

src/bin/secp256r1.rs

@@ -1 +1,27 @@
+use num::BigUint;
+use serde::{Deserialize, Serialize};
+use sp1_core::utils::ec::field::{FieldParameters, MAX_NB_LIMBS};
+
+#[derive(Debug, Clone, Copy, PartialEq, Serialize, Deserialize)]
+pub struct Secp256r1Parameters;
+
+#[derive(Debug, Default, Clone, Copy, PartialEq, Serialize, Deserialize)]
+pub struct Secp256r1BaseField;
+
+impl FieldParameters for Secp256r1BaseField {
+    const NB_BITS_PER_LIMB: usize = 16;
+
+    const NB_LIMBS: usize = 16;
+
+    const NB_WITNESS_LIMBS: usize = 2 * Self::NB_LIMBS - 2;
+
+    const MODULUS: [u8; MAX_NB_LIMBS] = [
+        0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
+        0xFF, 0xFC,
+    ];
+
+    const WITNESS_OFFSET: usize = 1usize << 14;
+}
+
 fn main() {}