RustCrypto · tarcieri · Jan 25, 2026 · Jan 25, 2026 · tarcieri · Jan 25, 2026
diff --git a/aead/CHANGELOG.md b/aead/CHANGELOG.md
@@ -6,6 +6,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
+### Added
+- Re-export `crypto_common` as `common` ([#2237])
+
 ### Fixed
 - Minor documentation error in `AeadCore::TagSize` ([#1351])
 - Fixup `hybrid-array` migration ([#1531])
@@ -43,6 +46,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#1531]: https://github.com/RustCrypto/traits/pull/1531
 [#1759]: https://github.com/RustCrypto/traits/pull/1759
 [#1999]: https://github.com/RustCrypto/traits/pull/1999
+[#2237]: https://github.com/RustCrypto/traits/pull/2237
 
 ## 0.5.2 (2023-04-02)
 ### Added

diff --git a/aead/Cargo.toml b/aead/Cargo.toml
@@ -16,7 +16,7 @@ such as AES-GCM as ChaCha20Poly1305, which provide a high-level API
 """
 
 [dependencies]
-crypto-common = "0.2.0-rc.13"
+common = { version = "0.2.0-rc.13", package = "crypto-common" }
 inout = "0.2.2"
 
 # optional dependencies
@@ -28,8 +28,8 @@ bytes = { version = "1", optional = true, default-features = false }
 default = ["rand_core"]
 alloc = []
 dev = ["blobby", "alloc"]
-getrandom = ["crypto-common/getrandom"]
-rand_core = ["crypto-common/rand_core"]
+getrandom = ["common/getrandom"]
+rand_core = ["common/rand_core"]
 
 [package.metadata.docs.rs]
 all-features = true
diff --git a/aead/src/dev.rs b/aead/src/dev.rs
@@ -3,7 +3,7 @@ use crate::{
     Aead, AeadInOut, Payload, Tag, TagPosition, array::typenum::Unsigned, inout::InOutBuf,
 };
 pub use blobby;
-use crypto_common::KeyInit;
+use common::KeyInit;
 
 /// AEAD test vector
 #[derive(Debug, Clone, Copy)]

diff --git a/aead/src/lib.rs b/aead/src/lib.rs
@@ -19,8 +19,8 @@ extern crate alloc;
 #[cfg(feature = "dev")]
 pub mod dev;
 
-pub use crypto_common::{
-    Key, KeyInit, KeySizeUser,
+pub use common::{
+    self, Key, KeyInit, KeySizeUser,
     array::{self, typenum::consts},
 };
 
@@ -29,11 +29,11 @@ pub use arrayvec;
 #[cfg(feature = "bytes")]
 pub use bytes;
 #[cfg(feature = "rand_core")]
-pub use crypto_common::{Generate, rand_core};
+pub use common::{Generate, rand_core};
 pub use inout;
 
+use common::array::{Array, ArraySize, typenum::Unsigned};
 use core::fmt;
-use crypto_common::array::{Array, ArraySize, typenum::Unsigned};
 use inout::InOutBuf;
 
 #[cfg(feature = "alloc")]

diff --git a/cipher/CHANGELOG.md b/cipher/CHANGELOG.md
@@ -8,12 +8,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## 0.5.0 (UNRELEASED)
 ### Changed
 - Edition changed to 2024 and MSRV bumped to 1.85 ([#1759])
+- Re-export of `crypto-common` moved to `cipher::common` ([#2237])
 
 ### Fixed
 - Seeking implementation in the stream cipher wrapper ([#2052])
 
 [#1759]: https://github.com/RustCrypto/traits/pull/1759
 [#2052]: https://github.com/RustCrypto/traits/pull/2052
+[#2237]: https://github.com/RustCrypto/traits/pull/2237
 
 ## 0.4.4 (2022-03-09)
 ### Changed

diff --git a/cipher/Cargo.toml b/cipher/Cargo.toml
@@ -13,7 +13,7 @@ categories = ["cryptography", "no-std"]
 description = "Traits for describing block ciphers and stream ciphers"
 
 [dependencies]
-crypto-common = "0.2.0-rc.13"
+common = { version = "0.2.0-rc.13", package = "crypto-common" }
 inout = "0.2.2"
 
 # optional dependencies
@@ -29,10 +29,10 @@ alloc = []
 block-padding = ["inout/block-padding"]
 stream-wrapper = ["block-buffer"]
 # Enable random key and IV generation methods
-getrandom = ["crypto-common/getrandom"]
-rand_core = ["crypto-common/rand_core"]
+getrandom = ["common/getrandom"]
+rand_core = ["common/rand_core"]
 dev = ["blobby"]
-zeroize = ["dep:zeroize", "crypto-common/zeroize", "block-buffer?/zeroize"]
+zeroize = ["dep:zeroize", "common/zeroize", "block-buffer?/zeroize"]
 
 [package.metadata.docs.rs]
 all-features = true
diff --git a/cipher/src/block.rs b/cipher/src/block.rs
@@ -12,7 +12,7 @@
 
 #[cfg(all(feature = "block-padding", feature = "alloc"))]
 use alloc::{vec, vec::Vec};
-use crypto_common::{Block, BlockSizeUser};
+use common::{Block, BlockSizeUser};
 use inout::{InOut, InOutBuf, NotEqualError};
 #[cfg(feature = "block-padding")]
 use inout::{
@@ -136,8 +136,8 @@ pub trait BlockCipherEncrypt: BlockSizeUser + Sized {
     #[inline]
     fn encrypt_padded_vec<P: Padding>(&self, msg: &[u8]) -> Vec<u8> {
         use block_padding::{NoPadding, ZeroPadding};
+        use common::typenum::Unsigned;
         use core::any::TypeId;
-        use crypto_common::typenum::Unsigned;
 
         let bs = Self::BlockSize::USIZE;
         let msg_len = msg.len();
@@ -404,8 +404,8 @@ pub trait BlockModeEncrypt: BlockSizeUser + Sized {
     #[inline]
     fn encrypt_padded_vec<P: Padding>(self, msg: &[u8]) -> Vec<u8> {
         use block_padding::{NoPadding, ZeroPadding};
+        use common::typenum::Unsigned;
         use core::any::TypeId;
-        use crypto_common::typenum::Unsigned;
 
         let bs = Self::BlockSize::USIZE;
         let msg_len = msg.len();

diff --git a/cipher/src/block/backends.rs b/cipher/src/block/backends.rs
@@ -1,4 +1,4 @@
-use crypto_common::{Block, BlockSizeUser, ParBlocks, ParBlocksSizeUser, typenum::Unsigned};
+use common::{Block, BlockSizeUser, ParBlocks, ParBlocksSizeUser, typenum::Unsigned};
 use inout::{InOut, InOutBuf};
 
 /// Trait implemented by block cipher mode encryption backends.

diff --git a/cipher/src/block/ctx.rs b/cipher/src/block/ctx.rs
@@ -1,4 +1,4 @@
-use crypto_common::{Block, BlockSizeUser, BlockSizes, typenum::Unsigned};
+use common::{Block, BlockSizeUser, BlockSizes, typenum::Unsigned};
 use inout::{InOut, InOutBuf};
 
 use super::{

diff --git a/cipher/src/lib.rs b/cipher/src/lib.rs
@@ -24,9 +24,9 @@ extern crate alloc;
 
 #[cfg(feature = "dev")]
 pub use blobby;
-pub use crypto_common;
+pub use common;
 #[cfg(feature = "rand_core")]
-pub use crypto_common::rand_core;
+pub use common::rand_core;
 pub use inout;
 #[cfg(feature = "block-padding")]
 pub use inout::block_padding;
@@ -43,10 +43,13 @@ pub use block::*;
 pub use stream::*;
 pub use tweak::*;
 
-pub use crypto_common::{
+pub use common::{
     AlgorithmName, Block, BlockSizeUser, InnerIvInit, InvalidLength, Iv, IvSizeUser, IvState, Key,
     KeyInit, KeyIvInit, KeySizeUser, ParBlocks, ParBlocksSizeUser,
     array::{self, Array},
     typenum::{self, consts},
 };
 pub use inout::{InOut, InOutBuf};
+
+#[deprecated(since = "0.5.0", note = "use `cipher::common` instead")]
+pub use common as crypto_common;
diff --git a/cipher/src/stream.rs b/cipher/src/stream.rs
@@ -4,7 +4,7 @@
 //! for ciphers implementation.
 
 use crate::block::{BlockModeDecrypt, BlockModeEncrypt};
-use crypto_common::Block;
+use common::Block;
 use inout::{InOutBuf, NotEqualError};
 
 mod core_api;

diff --git a/cipher/src/stream/core_api.rs b/cipher/src/stream/core_api.rs
@@ -1,6 +1,6 @@
 use super::StreamCipherError;
 use crate::{array::Array, typenum::Unsigned};
-use crypto_common::{Block, BlockSizeUser, BlockSizes, ParBlocks, ParBlocksSizeUser};
+use common::{Block, BlockSizeUser, BlockSizes, ParBlocks, ParBlocksSizeUser};
 use inout::{InOut, InOutBuf};
 
 /// Trait implemented by stream cipher backends.

diff --git a/cipher/src/stream/wrapper.rs b/cipher/src/stream/wrapper.rs
@@ -5,10 +5,10 @@ use super::{
     errors::StreamCipherError,
 };
 use block_buffer::ReadBuffer;
-use core::fmt;
-use crypto_common::{
+use common::{
     Iv, IvSizeUser, Key, KeyInit, KeyIvInit, KeySizeUser, array::Array, typenum::Unsigned,
 };
+use core::fmt;
 use inout::InOutBuf;
 #[cfg(feature = "zeroize")]
 use zeroize::ZeroizeOnDrop;

diff --git a/cipher/src/tweak.rs b/cipher/src/tweak.rs
@@ -1,7 +1,7 @@
 //! Traits used to define functionality of [tweakable block ciphers][1].
 //!
 //! [1]: https://people.eecs.berkeley.edu/~daw/papers/tweak-crypto02.pdf
-use crypto_common::{
+use common::{
     Block, BlockSizeUser,
     array::{Array, ArraySize},
 };

diff --git a/cipher/src/tweak/ctx.rs b/cipher/src/tweak/ctx.rs
@@ -1,4 +1,4 @@
-use crypto_common::{Block, BlockSizeUser, BlockSizes, array::ArraySize};
+use common::{Block, BlockSizeUser, BlockSizes, array::ArraySize};
 use inout::InOut;
 
 use super::{

diff --git a/cipher/src/tweak/zero.rs b/cipher/src/tweak/zero.rs
@@ -1,6 +1,6 @@
 use core::marker::PhantomData;
 
-use crypto_common::{Block, BlockSizes, ParBlocksSizeUser, array::ArraySize};
+use common::{Block, BlockSizes, ParBlocksSizeUser, array::ArraySize};
 
 use super::{
     TweakBlockCipherDecBackend, TweakBlockCipherDecClosure, TweakBlockCipherDecrypt,

diff --git a/crypto/Cargo.toml b/crypto/Cargo.toml
@@ -13,7 +13,7 @@ categories = ["cryptography", "no-std"]
 description = "Facade crate for all of the RustCrypto traits (e.g. `aead`, `cipher`, `digest`)"
 
 [dependencies]
-crypto-common = { version = "0.2.0-rc.13", path = "../crypto-common", default-features = false }
+common = { version = "0.2.0-rc.13", package = "crypto-common", path = "../crypto-common", default-features = false }
 
 # optional dependencies
 aead = { version = "0.6.0-rc.5", path = "../aead", optional = true }
@@ -26,8 +26,8 @@ universal-hash = { version = "0.6.0-rc.4", path = "../universal-hash", optional
 
 [features]
 std = ["elliptic-curve/std"]
-getrandom = ["crypto-common/getrandom"]
-rand_core = ["crypto-common/rand_core"]
+getrandom = ["common/getrandom"]
+rand_core = ["common/rand_core"]
 
 [package.metadata.docs.rs]
 all-features = true
diff --git a/crypto/src/lib.rs b/crypto/src/lib.rs
@@ -8,7 +8,7 @@
 #![forbid(unsafe_code)]
 #![warn(rust_2018_idioms, missing_debug_implementations)]
 
-pub use crypto_common as common;
+pub use common;
 
 #[cfg(feature = "aead")]
 pub use aead;

diff --git a/digest/CHANGELOG.md b/digest/CHANGELOG.md
@@ -19,6 +19,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Removed the OID type parameter from `CtOutWrapper` ([#1799])
 - Implementations of the `SerializableState` trait ([#1953])
 - `new_test!` and `new_mac_test!` macros ([#1958])
+- Re-export of `crypto-common` moved to `digest::common` ([#2237])
 
 ### Removed
 - `Mac::new`, `Mac::new_from_slice`, and `Mac::generate_key` methods ([#1173])
@@ -36,6 +37,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#1953]: https://github.com/RustCrypto/traits/pull/1953
 [#1958]: https://github.com/RustCrypto/traits/pull/1958
 [#2043]: https://github.com/RustCrypto/traits/pull/2043
+[#2237]: https://github.com/RustCrypto/traits/pull/2237
 
 ## 0.10.7 (2023-05-19)
 ### Changed

diff --git a/digest/Cargo.toml b/digest/Cargo.toml
@@ -13,7 +13,7 @@ categories = ["cryptography", "no-std"]
 description = "Traits for cryptographic hash functions and message authentication codes"
 
 [dependencies]
-crypto-common = "0.2.0-rc.13"
+common = { version = "0.2.0-rc.13", package = "crypto-common" }
 
 # optional dependencies
 block-buffer = { version = "0.11", optional = true }
@@ -26,8 +26,8 @@ zeroize = { version = "1.7", optional = true, default-features = false }
 default = ["block-api"]
 block-api = ["block-buffer"] # Enable block API traits
 mac = ["subtle"] # Enable MAC traits
-rand_core = ["crypto-common/rand_core"] # Enable random key generation methods
-getrandom = ["crypto-common/getrandom", "rand_core"]
+rand_core = ["common/rand_core"] # Enable random key generation methods
+getrandom = ["common/getrandom", "rand_core"]
 oid = ["const-oid"]
 zeroize = ["dep:zeroize", "block-buffer?/zeroize"]
 alloc = []

diff --git a/digest/src/block_api.rs b/digest/src/block_api.rs
@@ -6,10 +6,10 @@
 use crate::{Digest, HashMarker, InvalidOutputSize};
 
 pub use block_buffer::{Eager, Lazy};
-pub use crypto_common::{AlgorithmName, Block, BlockSizeUser, OutputSizeUser, Reset};
+pub use common::{AlgorithmName, Block, BlockSizeUser, OutputSizeUser, Reset};
 
 use block_buffer::{BlockBuffer, BufferKind};
-use crypto_common::Output;
+use common::Output;
 
 mod ct_variable;
 pub use ct_variable::CtOutWrapper;

diff --git a/digest/src/block_api/ct_variable.rs b/digest/src/block_api/ct_variable.rs
@@ -5,13 +5,13 @@ use super::{
 #[cfg(feature = "mac")]
 use crate::MacMarker;
 use crate::{CollisionResistance, CustomizedInit, HashMarker};
-use core::{fmt, marker::PhantomData};
-use crypto_common::{
+use common::{
     Block, BlockSizeUser, OutputSizeUser,
     array::{Array, ArraySize},
     hazmat::{DeserializeStateError, SerializableState, SerializedState},
     typenum::{IsLessOrEqual, True},
 };
+use core::{fmt, marker::PhantomData};
 
 /// Wrapper around [`VariableOutputCore`] which selects output size at compile time.
 #[derive(Clone)]