diff --git a/Cargo.lock b/Cargo.lock
index ff115de1..1e9647df 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,18 +2,6 @@
 # It is not intended for manual editing.
 version = 3
 
-[[package]]
-name = "ahash"
-version = "0.8.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e89da841a80418a9b391ebaea17f5c112ffaaa96f621d2c285b5174da76b9011"
-dependencies = [
- "cfg-if",
- "once_cell",
- "version_check",
- "zerocopy",
-]
-
 [[package]]
 name = "aho-corasick"
 version = "1.1.3"
@@ -84,12 +72,6 @@ dependencies = [
  "windows-sys",
 ]
 
-[[package]]
-name = "anyhow"
-version = "1.0.86"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b3d1d046238990b9cf5bcde22a3fb3584ee5cf65fb2765f454ed428c7a0063da"
-
 [[package]]
 name = "arbitrary"
 version = "1.3.2"
@@ -172,12 +154,12 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "chia-bls"
-version = "0.10.0"
+version = "0.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "725b43b268cb81f014559eed11a74d0e5b9dd55282cae272ff509796099ab0b9"
+checksum = "53dea95bd7dac1e69c59ef6839ecf30ff3fe29170c16c4aa00093be21e0d789e"
 dependencies = [
- "anyhow",
  "blst",
+ "chia-sha2",
  "chia-traits",
  "hex",
  "hkdf",
@@ -186,27 +168,37 @@ dependencies = [
  "thiserror",
 ]
 
+[[package]]
+name = "chia-sha2"
+version = "0.15.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7020f53eeae8b4c24c5666165738173a167c6478e0c0a9e1c428a491a2e1383d"
+dependencies = [
+ "openssl",
+ "sha2",
+]
+
 [[package]]
 name = "chia-traits"
-version = "0.10.0"
+version = "0.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1fb786114e5c748fe0af3ba1e95840fa1910b28f7300c05184506045aff60bb6"
+checksum = "e57bbde886b38a9a5df185e751d90e295d14e99659bf43df7fa701d52d4da1ea"
 dependencies = [
+ "chia-sha2",
  "chia_streamable_macro",
- "sha2",
  "thiserror",
 ]
 
 [[package]]
 name = "chia_streamable_macro"
-version = "0.10.0"
+version = "0.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43975e01fb4293021af4950366a6f80c45d7301d499622359c7533bd7af19592"
+checksum = "00e78b5981952d2383b08344fdc6e6f843e72cc9d502d46d1d2824c485b34694"
 dependencies = [
  "proc-macro-crate 1.3.1",
  "proc-macro2",
  "quote",
- "syn 2.0.85",
+ "syn 2.0.87",
 ]
 
 [[package]]
@@ -267,7 +259,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.85",
+ "syn 2.0.87",
 ]
 
 [[package]]
@@ -327,6 +319,7 @@ name = "clvmr"
 version = "0.10.0"
 dependencies = [
  "chia-bls",
+ "chia-sha2",
  "criterion",
  "hex",
  "hex-literal",
@@ -335,10 +328,8 @@ dependencies = [
  "num-bigint",
  "num-integer",
  "num-traits",
- "openssl",
  "p256",
  "rstest",
- "sha2",
  "sha3",
 ]
 
@@ -552,6 +543,12 @@ dependencies = [
  "subtle",
 ]
 
+[[package]]
+name = "foldhash"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f81ec6369c545a7d40e4589b5597581fa1c441fe1cce96dd1de43159910a36a2"
+
 [[package]]
 name = "foreign-types"
 version = "0.3.2"
@@ -623,7 +620,7 @@ checksum = "87750cf4b7a4c0625b1529e4c543c2182106e4dedc60a2a6455e00d212c489ac"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.85",
+ "syn 2.0.87",
 ]
 
 [[package]]
@@ -718,9 +715,16 @@ name = "hashbrown"
 version = "0.14.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e5274423e17b7c9fc20b6e7e208532f9b19825d82dfd615708b70edd83df41f1"
+
+[[package]]
+name = "hashbrown"
+version = "0.15.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3a9bfc1af68b1726ea47d3d5109de126281def866b33970e10fbab11b5dafab3"
 dependencies = [
- "ahash",
  "allocator-api2",
+ "equivalent",
+ "foldhash",
 ]
 
 [[package]]
@@ -772,7 +776,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "168fb715dda47215e360912c096649d23d58bf392ac62f73919e831745e40f26"
 dependencies = [
  "equivalent",
- "hashbrown",
+ "hashbrown 0.14.5",
 ]
 
 [[package]]
@@ -895,11 +899,11 @@ checksum = "a7a70ba024b9dc04c27ea2f0c0548feb474ec5c54bba33a7f72f873a39d07b24"
 
 [[package]]
 name = "lru"
-version = "0.12.3"
+version = "0.12.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d3262e75e648fce39813cb56ac41f3c3e3f65217ebf3844d818d1f9398cfb0dc"
+checksum = "234cf4f4a04dc1f57e24b96cc0cd600cf2af460d4161ac5ecdd0af8e1f3b2a38"
 dependencies = [
- "hashbrown",
+ "hashbrown 0.15.1",
 ]
 
 [[package]]
@@ -1000,16 +1004,7 @@ checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.85",
-]
-
-[[package]]
-name = "openssl-src"
-version = "300.3.1+3.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7259953d42a81bf137fbbd73bd30a8e1914d6dce43c2b90ed575783a22608b91"
-dependencies = [
- "cc",
+ "syn 2.0.87",
 ]
 
 [[package]]
@@ -1020,7 +1015,6 @@ checksum = "45abf306cbf99debc8195b66b7346498d7b10c210de50418b5ccd7ceba08c741"
 dependencies = [
  "cc",
  "libc",
- "openssl-src",
  "pkg-config",
  "vcpkg",
 ]
@@ -1070,9 +1064,9 @@ dependencies = [
 
 [[package]]
 name = "pkg-config"
-version = "0.3.30"
+version = "0.3.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d231b230927b5e4ad203db57bbcbee2802f6bce620b1e4a9024a07d94e2907ec"
+checksum = "953ec861398dccce10c670dfeaf3ec4911ca479e9c02154b3a215178c5f566f2"
 
 [[package]]
 name = "plotters"
@@ -1198,7 +1192,7 @@ dependencies = [
  "proc-macro2",
  "pyo3-macros-backend",
  "quote",
- "syn 2.0.85",
+ "syn 2.0.87",
 ]
 
 [[package]]
@@ -1211,7 +1205,7 @@ dependencies = [
  "proc-macro2",
  "pyo3-build-config",
  "quote",
- "syn 2.0.85",
+ "syn 2.0.87",
 ]
 
 [[package]]
@@ -1344,7 +1338,7 @@ dependencies = [
  "regex",
  "relative-path",
  "rustc_version",
- "syn 2.0.85",
+ "syn 2.0.87",
  "unicode-ident",
 ]
 
@@ -1415,7 +1409,7 @@ checksum = "de523f781f095e28fa605cdce0f8307e451cc0fd14e2eb4cd2e98a355b147766"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.85",
+ "syn 2.0.87",
 ]
 
 [[package]]
@@ -1516,9 +1510,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.85"
+version = "2.0.87"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5023162dfcd14ef8f32034d8bcd4cc5ddc61ef7a247c024a33e24e1f24d21b56"
+checksum = "25aa4ce346d03a6dcd68dd8b4010bcb74e54e62c90c573f394c46eae99aba32d"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1533,22 +1527,22 @@ checksum = "4873307b7c257eddcb50c9bedf158eb669578359fb28428bef438fec8e6ba7c2"
 
 [[package]]
 name = "thiserror"
-version = "1.0.61"
+version = "1.0.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c546c80d6be4bc6a00c0f01730c08df82eaa7a7a61f11d656526506112cc1709"
+checksum = "b6aaf5339b578ea85b50e080feb250a3e8ae8cfcdff9a461c9ec2904bc923f52"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.61"
+version = "1.0.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "46c3384250002a6d5af4d114f2845d37b57521033f30d5c3f46c4d70e1197533"
+checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.85",
+ "syn 2.0.87",
 ]
 
 [[package]]
@@ -1672,7 +1666,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn 2.0.85",
+ "syn 2.0.87",
  "wasm-bindgen-shared",
 ]
 
@@ -1706,7 +1700,7 @@ checksum = "26c6ab57572f7a24a4985830b120de1594465e5d500f24afe89e16b4e833ef68"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.85",
+ "syn 2.0.87",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]
@@ -1740,7 +1734,7 @@ checksum = "4b8220be1fa9e4c889b30fd207d4906657e7e90b12e0e6b0c8b8d8709f5de021"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.85",
+ "syn 2.0.87",
 ]
 
 [[package]]
@@ -1844,26 +1838,6 @@ dependencies = [
  "memchr",
 ]
 
-[[package]]
-name = "zerocopy"
-version = "0.7.35"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
-dependencies = [
- "zerocopy-derive",
-]
-
-[[package]]
-name = "zerocopy-derive"
-version = "0.7.35"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 2.0.85",
-]
-
 [[package]]
 name = "zeroize"
 version = "1.8.1"
@@ -1881,5 +1855,5 @@ checksum = "ce36e65b0d2999d2aafac989fb249189a141aee1f53c612c1f37d72631959f69"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.85",
+ "syn 2.0.87",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 027684c6..24d28393 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -27,8 +27,8 @@ counters = []
 pre-eval = []
 
 # On UNIX-based platforms, you may get a speed boost on `sha256` operations by building
-# with OpenSSL.when enabled
-openssl = ["dep:openssl"]
+# with OpenSSL when enabled
+openssl = ["chia-sha2/openssl"]
 
 [profile.release]
 lto = "thin"
@@ -39,9 +39,8 @@ lazy_static = "1.5.0"
 num-bigint = "0.4.6"
 num-traits = "0.2.19"
 num-integer = "0.1.46"
-chia-bls = "0.10.0"
-sha2 = "0.10.8"
-openssl = "0.10.68"
+chia-bls = "0.15.0"
+chia-sha2 = "0.15.0"
 hex-literal = "0.4.1"
 # for secp sigs
 k256 = "0.13.4"
@@ -69,8 +68,7 @@ num-bigint = { workspace = true }
 num-traits = { workspace = true }
 num-integer = { workspace = true }
 chia-bls = { workspace = true }
-sha2 = { workspace = true }
-openssl = { workspace = true, features = ["vendored"], optional = true }
+chia-sha2 = { workspace = true }
 hex-literal = { workspace = true }
 # for secp sigs
 k256 = { version = "0.13.4", features = ["ecdsa"] }
diff --git a/benches/sha256_hash.rs b/benches/sha256_hash.rs
index 25ba3a3c..68aedd76 100644
--- a/benches/sha256_hash.rs
+++ b/benches/sha256_hash.rs
@@ -1,6 +1,6 @@
 use criterion::{criterion_group, criterion_main, Criterion};
 
-use clvmr::sha2::Sha256;
+use chia_sha2::Sha256;
 
 const BYTE_LENGTHS: [u8; 6] = [8, 16, 32, 64, 96, 128];
 const MAX_VAL: u8 = 250;
diff --git a/src/lib.rs b/src/lib.rs
index a57aec48..5a3aca19 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -15,7 +15,6 @@ pub mod run_program;
 pub mod runtime_dialect;
 pub mod secp_ops;
 pub mod serde;
-pub mod sha2;
 pub mod traverse_path;
 
 pub use allocator::{Allocator, Atom, NodePtr, SExp};
diff --git a/src/more_ops.rs b/src/more_ops.rs
index 7e72a6e4..b10d3e67 100644
--- a/src/more_ops.rs
+++ b/src/more_ops.rs
@@ -14,8 +14,8 @@ use crate::op_utils::{
     new_atom_and_cost, nilp, u32_from_u8, MALLOC_COST_PER_BYTE,
 };
 use crate::reduction::{Reduction, Response};
-use crate::sha2::Sha256;
 use chia_bls::G1Element;
+use chia_sha2::Sha256;
 
 const ARITH_BASE_COST: Cost = 99;
 const ARITH_COST_PER_ARG: Cost = 320;
diff --git a/src/serde/bytes32.rs b/src/serde/bytes32.rs
index f6a2e593..3254cf37 100644
--- a/src/serde/bytes32.rs
+++ b/src/serde/bytes32.rs
@@ -1,4 +1,4 @@
-use crate::sha2::Sha256;
+use chia_sha2::Sha256;
 
 pub type Bytes32 = [u8; 32];
 
diff --git a/src/serde/de_tree.rs b/src/serde/de_tree.rs
index d645df09..be189228 100644
--- a/src/serde/de_tree.rs
+++ b/src/serde/de_tree.rs
@@ -1,6 +1,6 @@
 use std::io::{Error, Read, Result, Write};
 
-use crate::sha2::Sha256;
+use chia_sha2::Sha256;
 
 use super::parse_atom::decode_size_with_offset;
 use super::utils::{copy_exactly, skip_bytes};
diff --git a/src/serde/tools.rs b/src/serde/tools.rs
index 820caf52..2df3fd15 100644
--- a/src/serde/tools.rs
+++ b/src/serde/tools.rs
@@ -45,7 +45,7 @@ pub fn serialized_length_from_bytes_trusted(b: &[u8]) -> io::Result<u64> {
     Ok(f.position())
 }
 
-use crate::sha2::Sha256;
+use chia_sha2::Sha256;
 
 fn hash_atom(buf: &[u8]) -> [u8; 32] {
     let mut ctx = Sha256::new();
diff --git a/src/sha2.rs b/src/sha2.rs
deleted file mode 100644
index 15738958..00000000
--- a/src/sha2.rs
+++ /dev/null
@@ -1,64 +0,0 @@
-#[cfg(feature = "openssl")]
-use openssl;
-
-#[cfg(not(feature = "openssl"))]
-use sha2::Digest;
-
-#[derive(Default, Clone)]
-pub struct Sha256 {
-    #[cfg(feature = "openssl")]
-    ctx: openssl::sha::Sha256,
-
-    #[cfg(not(feature = "openssl"))]
-    ctx: sha2::Sha256,
-}
-
-impl Sha256 {
-    pub fn new() -> Self {
-        Self::default()
-    }
-    pub fn update(&mut self, buf: impl AsRef<[u8]>) {
-        self.ctx.update(buf.as_ref());
-    }
-    pub fn finalize(self) -> [u8; 32] {
-        #[cfg(feature = "openssl")]
-        {
-            self.ctx.finish()
-        }
-        #[cfg(not(feature = "openssl"))]
-        {
-            self.ctx.finalize().into()
-        }
-    }
-}
-
-#[test]
-fn test_sha256() {
-    // https://www.di-mgt.com.au/sha_testvectors.html
-
-    let output = &[
-        0xba, 0x78, 0x16, 0xbf, 0x8f, 0x01, 0xcf, 0xea, 0x41, 0x41, 0x40, 0xde, 0x5d, 0xae, 0x22,
-        0x23, 0xb0, 0x03, 0x61, 0xa3, 0x96, 0x17, 0x7a, 0x9c, 0xb4, 0x10, 0xff, 0x61, 0xf2, 0x00,
-        0x15, 0xad,
-    ];
-
-    let mut ctx = Sha256::new();
-    ctx.update([0x61, 0x62, 0x63]);
-    assert_eq!(&ctx.finalize().as_slice(), output);
-
-    let mut ctx = Sha256::new();
-    ctx.update([0x61]);
-    ctx.update([0x62]);
-    ctx.update([0x63]);
-    assert_eq!(&ctx.finalize().as_slice(), output);
-
-    let mut ctx = Sha256::new();
-    ctx.update([0x61, 0x62]);
-    ctx.update([0x63]);
-    assert_eq!(&ctx.finalize().as_slice(), output);
-
-    let mut ctx = Sha256::new();
-    ctx.update([0x61]);
-    ctx.update([0x62, 0x63]);
-    assert_eq!(&ctx.finalize().as_slice(), output);
-}