bump crypto-bigint to master, use core naming conventions (#963)

Author: baloo

Cargo.lock

@@ -30,7 +30,8 @@ slh-dsa         = { path = "./slh-dsa" }
 # https://github.com/RustCrypto/traits/pull/1767
 # https://github.com/RustCrypto/traits/pull/1774
 # https://github.com/RustCrypto/traits/pull/1822
+# https://github.com/RustCrypto/traits/pull/1845
 elliptic-curve = { git = "https://github.com/RustCrypto/traits.git" }
 signature      = { git = "https://github.com/RustCrypto/traits.git" }
- 
+
 crypto-primes = { git = "https://github.com/entropyxyz/crypto-primes.git" }

Cargo.toml

@@ -17,7 +17,7 @@ rust-version = "1.85"
 
 [dependencies]
 digest = "=0.11.0-pre.10"
-crypto-bigint = { version = "=0.7.0-pre.2", default-features = false, features = ["alloc", "zeroize"] }
+crypto-bigint = { version = "=0.7.0-pre.3", default-features = false, features = ["alloc", "zeroize"] }
 crypto-primes = { version = "=0.7.0-dev", default-features = false }
 pkcs8 = { version = "0.11.0-rc.1", default-features = false, features = ["alloc"] }
 rfc6979 = { version = "=0.5.0-pre.4" }

dsa/Cargo.toml

@@ -48,7 +48,7 @@ where
 
         let k = BoxedUint::from_be_slice(&buffer, q.bits_precision())
             .map_err(|_| signature::Error::new())?;
-        if let Some(inv_k) = k.inv_mod(q).into() {
+        if let Some(inv_k) = k.invert_mod(q).into() {
             if (bool::from(k.is_nonzero())) && (k < **q) {
                 return Ok((k, inv_k));
             }
@@ -79,7 +79,7 @@ pub fn secret_number<R: TryCryptoRng + ?Sized>(
             .expect("[bug] minimum size for q is to 2^(160 - 1)");
         let k = (c % rem) + BoxedUint::one();
 
-        if let Some(inv_k) = k.inv_mod(q).into() {
+        if let Some(inv_k) = k.invert_mod(q).into() {
             // `k` and `k^-1` both have to be in the range `[1, q-1]`
             if (inv_k > BoxedUint::zero() && inv_k < **q) && (k > BoxedUint::zero() && k < **q) {
                 return Ok(Some((k, inv_k)));

dsa/src/generate/secret_number.rs

@@ -73,7 +73,7 @@ impl VerifyingKey {
         let r = &r.resize(p.bits_precision());
         let s = &s.resize(p.bits_precision());
 
-        let w: BoxedUint = Option::from(s.inv_mod(q))?;
+        let w: BoxedUint = Option::from(s.invert_mod(q))?;
 
         let n = q.bits() / 8;
         let block_size = hash.len(); // Hash function output size