diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 85de51c..a9b630e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,7 +27,7 @@ jobs:
           - target: x86_64-unknown-linux-gnu
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@stable
+      - uses: dtolnay/rust-toolchain@1.91.1
       - run: cargo --version
       - run: cargo test --all-features
 
@@ -35,14 +35,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@stable
+      - uses: dtolnay/rust-toolchain@1.91.1
       - run: cargo fmt --all -- --check
 
   clippy:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@stable
+      - uses: dtolnay/rust-toolchain@1.91.1
         with:
           components: clippy
       - run: cargo clippy --all-features -- -D warnings
@@ -55,14 +55,14 @@ jobs:
       - uses: actions/checkout@v3
       - uses: dtolnay/rust-toolchain@master
         with:
-          toolchain: stable
+          toolchain: "1.91.1"
           targets: thumbv7em-none-eabi
       - uses: taiki-e/install-action@cargo-hack
       # No default features build
       - name: no_std / no feat
         run: cargo build --target thumbv7em-none-eabi --release --no-default-features
       - name: no_std / cargo hack
-        run: cargo hack build --target thumbv7em-none-eabi --release --each-feature --exclude-features default,std
+        run: cargo hack build --target thumbv7em-none-eabi --release --each-feature --exclude-features default,kat
 
   msrv:
     name: rust-version is MSRV
@@ -70,7 +70,7 @@ jobs:
     continue-on-error: true
     steps:
       - uses: actions/checkout@v4
-      - uses: dtolnay/rust-toolchain@stable
+      - uses: dtolnay/rust-toolchain@1.91.1
       - run: cargo +nightly install cargo-msrv --no-default-features
       - run: cargo +nightly msrv --version
       - run: cargo +nightly msrv verify --all-features
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e42af0d..9aa4f60 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 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).
 
+## Unrelease
+
+* Renamed `std` feature to `kat`. Not breaking bc this is only used in testing
+
 ## [0.11.0] - 2025-11-24
 
 * Removed `std` flag from all but testing use
diff --git a/Cargo.lock b/Cargo.lock
index 39c29a0..239cfdd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -98,18 +98,18 @@ dependencies = [
 
 [[package]]
 name = "clap"
-version = "4.5.51"
+version = "4.5.54"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4c26d721170e0295f191a69bd9a1f93efcdb0aff38684b61ab5750468972e5f5"
+checksum = "c6e6ff9dcd79cff5cd969a17a545d79e84ab086e444102a591e288a8aa3ce394"
 dependencies = [
  "clap_builder",
 ]
 
 [[package]]
 name = "clap_builder"
-version = "4.5.51"
+version = "4.5.54"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "75835f0c7bf681bfd05abe44e965760fea999a5286c6eb2d59883634fd02011a"
+checksum = "fa42cf4d2b7a41bc8f663a7cab4031ebafa1bf3875705bfaf8466dc60ab52c00"
 dependencies = [
  "anstyle",
  "clap_lex",
@@ -117,9 +117,9 @@ dependencies = [
 
 [[package]]
 name = "clap_lex"
-version = "0.7.6"
+version = "0.7.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
+checksum = "c3e64b0cc0439b12df2fa678eae89a1c56a529fd067a9115f7827f1fffd22b32"
 
 [[package]]
 name = "cpufeatures"
@@ -132,25 +132,22 @@ dependencies = [
 
 [[package]]
 name = "criterion"
-version = "0.5.1"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2b12d017a929603d80db1831cd3a24082f8137ce19c69e6447f54f5fc8d692f"
+checksum = "e1c047a62b0cc3e145fa84415a3191f628e980b194c2755aa12300a4e6cbd928"
 dependencies = [
  "anes",
  "cast",
  "ciborium",
  "clap",
  "criterion-plot",
- "is-terminal",
  "itertools",
  "num-traits",
- "once_cell",
  "oorandom",
  "plotters",
  "rayon",
  "regex",
  "serde",
- "serde_derive",
  "serde_json",
  "tinytemplate",
  "walkdir",
@@ -158,9 +155,9 @@ dependencies = [
 
 [[package]]
 name = "criterion-plot"
-version = "0.5.0"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6b50826342786a51a89e2da3a28f1c32b06e387201bc2d19791f622c673706b1"
+checksum = "9b1bcc0dc7dfae599d84ad0b1a55f80cde8af3725da8313b528da95ef783e338"
 dependencies = [
  "cast",
  "itertools",
@@ -205,13 +202,14 @@ checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
 
 [[package]]
 name = "getrandom"
-version = "0.2.16"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "335ff9f135e4384c8150d6f27c6daed433577f86b4750418338c01a1a2528592"
+checksum = "899def5c37c4fd7b2664648c28120ecec138e4d395b459e5ca34f9cce2dd77fd"
 dependencies = [
  "cfg-if",
  "libc",
- "wasi",
+ "r-efi",
+ "wasip2",
 ]
 
 [[package]]
@@ -225,43 +223,26 @@ dependencies = [
  "zerocopy",
 ]
 
-[[package]]
-name = "hermit-abi"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fc0fef456e4baa96da950455cd02c081ca953b141298e41db3fc7e36b1da849c"
-
 [[package]]
 name = "hex"
 version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 
-[[package]]
-name = "is-terminal"
-version = "0.4.17"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3640c1c38b8e4e43584d8df18be5fc6b0aa314ce6ebf51b53313d4306cca8e46"
-dependencies = [
- "hermit-abi",
- "libc",
- "windows-sys",
-]
-
 [[package]]
 name = "itertools"
-version = "0.10.5"
+version = "0.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
+checksum = "413ee7dfc52ee1a4949ceeb7dbc8a33f2d6c088194d9f922fb8318faf1f01186"
 dependencies = [
  "either",
 ]
 
 [[package]]
 name = "itoa"
-version = "1.0.15"
+version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4a5f13b858c8d314ee3e8f639011f7ccefe71f97f96e50151fb991f267928e2c"
+checksum = "92ecc6618181def0457392ccd0ee51198e065e016d1d527a7ac1b6dc7c1f09d2"
 
 [[package]]
 name = "js-sys"
@@ -284,9 +265,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.177"
+version = "0.2.180"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2874a2af47a2325c2001a6e6fad9b16a53b802102b528163885171cf92b15976"
+checksum = "bcc35a38544a891a5f7c865aca548a982ccb3b8650a5b06d0fd33a10283c56fc"
 
 [[package]]
 name = "memchr"
@@ -354,38 +335,43 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.103"
+version = "1.0.106"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ee95bc4ef87b8d5ba32e8b7714ccc834865276eab0aed5c9958d00ec45f49e8"
+checksum = "8fd00f0bb2e90d81d1044c2b32617f68fcb9fa3bb7640c23e9c748e53fb30934"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.42"
+version = "1.0.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a338cc41d27e6cc6dce6cefc13a0729dfbb81c262b1f519331575dd80ef3067f"
+checksum = "21b2ebcf727b7760c461f091f9f0f539b77b8e87f2fd88131e7f1b433b3cece4"
 dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "r-efi"
+version = "5.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
+
 [[package]]
 name = "rand"
-version = "0.8.5"
+version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+checksum = "6db2770f06117d490610c7488547d543617b21bfa07796d7a12f6f1bd53850d1"
 dependencies = [
- "libc",
  "rand_chacha",
  "rand_core",
 ]
 
 [[package]]
 name = "rand_chacha"
-version = "0.3.1"
+version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
 dependencies = [
  "ppv-lite86",
  "rand_core",
@@ -393,9 +379,9 @@ dependencies = [
 
 [[package]]
 name = "rand_core"
-version = "0.6.4"
+version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+checksum = "76afc826de14238e6e8c374ddcc1fa19e374fd8dd986b0d2af0d02377261d83c"
 dependencies = [
  "getrandom",
 ]
@@ -455,12 +441,6 @@ version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b39cdef0fa800fc44525c84ccb54a029961a8215f9619753635a9c0d2538d46d"
 
-[[package]]
-name = "ryu"
-version = "1.0.20"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "28d3b2b1366ec20994f1fd18c3c594f05c5dd4bc44d8bb0c1c632c8d6829481f"
-
 [[package]]
 name = "same-file"
 version = "1.0.6"
@@ -511,15 +491,15 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.145"
+version = "1.0.149"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "402a6f66d8c709116cf22f558eab210f5a50187f702eb4d7e5ef38d9a7f1c79c"
+checksum = "83fc039473c5595ace860d8c4fafa220ff474b3fc6bfdb4293327f1a37e94d86"
 dependencies = [
  "itoa",
  "memchr",
- "ryu",
  "serde",
  "serde_core",
+ "zmij",
 ]
 
 [[package]]
@@ -548,9 +528,9 @@ checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
 
 [[package]]
 name = "syn"
-version = "2.0.110"
+version = "2.0.114"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a99801b5bd34ede4cf3fc688c5919368fea4e4814a4664359503e6015b280aea"
+checksum = "d4d107df263a3013ef9b1879b0df87d706ff80f65a86ea879bd9c31f9b307c2a"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -584,10 +564,13 @@ dependencies = [
 ]
 
 [[package]]
-name = "wasi"
-version = "0.11.1+wasi-snapshot-preview1"
+name = "wasip2"
+version = "1.0.2+wasi-0.2.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
+checksum = "9517f9239f02c069db75e65f174b3da828fe5f5b945c4dd26bd25d89c03ebcf5"
+dependencies = [
+ "wit-bindgen",
+]
 
 [[package]]
 name = "wasm-bindgen"
@@ -668,20 +651,26 @@ dependencies = [
  "windows-link",
 ]
 
+[[package]]
+name = "wit-bindgen"
+version = "0.51.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7249219f66ced02969388cf2bb044a09756a083d0fab1e566056b04d9fbcaa5"
+
 [[package]]
 name = "zerocopy"
-version = "0.8.27"
+version = "0.8.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0894878a5fa3edfd6da3f88c4805f4c8558e2b996227a3d864f47fe11e38282c"
+checksum = "668f5168d10b9ee831de31933dc111a459c97ec93225beb307aed970d1372dfd"
 dependencies = [
  "zerocopy-derive",
 ]
 
 [[package]]
 name = "zerocopy-derive"
-version = "0.8.27"
+version = "0.8.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "88d2b8d9c68ad2b9e4340d7832716a4d21a22a1154777ad56ea55c51a9cf3831"
+checksum = "2c7962b26b0a8685668b671ee4b54d007a67d4eaf05fda79ac0ecf41e32270f1"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -707,3 +696,9 @@ dependencies = [
  "quote",
  "syn",
 ]
+
+[[package]]
+name = "zmij"
+version = "1.0.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dfcd145825aace48cff44a8844de64bf75feec3080e0aa5cdbde72961ae51a65"
diff --git a/Cargo.toml b/Cargo.toml
index adf71a0..5659a17 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,7 +14,7 @@ rust-version = "1.81"
 
 [features]
 default = []
-std = []
+kat = []
 asm = ["keccak/asm"]
 serialize_secret_state = ["serde", "serde-big-array"]
 
@@ -31,9 +31,9 @@ subtle = { version = "2.6", default-features = false }
 zeroize = { version = "1.8", features = ["derive"] }
 
 [dev-dependencies]
-criterion = { version = "0.5", features = ["html_reports"] }
+criterion = { version = "0.7", features = ["html_reports"] }
 hex = "0.4"
-rand = "0.8.5"
+rand = "0.9.2"
 serde_json = "1"
 
 # Criteron benches
diff --git a/README.md b/README.md
index c66e1b0..3df6179 100644
--- a/README.md
+++ b/README.md
@@ -17,50 +17,47 @@ A simple [example](https://github.com/rozbb/strobe-rs/blob/master/examples/basic
 
 ```rust
 use strobe_rs::{SecParam, Strobe};
-
 use rand::RngCore;
 
 // NOTE: This is just a simple authenticated encryption scheme. For a robust AEAD construction,
 // see the example at https://strobe.sourceforge.io/examples/aead/
 
-fn main() {
-    let mut rng = rand::thread_rng();
-
-    // Sender and receiver
-    let mut tx = Strobe::new(b"correctnesstest", SecParam::B256);
-    let mut rx = Strobe::new(b"correctnesstest", SecParam::B256);
-
-    // Key both sides with a predetermined key
-    let k = b"the-combination-on-my-luggage";
-    tx.key(k, false);
-    rx.key(k, false);
-
-    // Have the transmitter sample and send a nonce (192 bits) in the clear
-    let mut nonce = [0u8; 24];
-    rng.fill_bytes(&mut nonce);
-    rx.recv_clr(&nonce, false);
-    tx.send_clr(&nonce, false);
-
-    // Have the transmitter send an authenticated ciphertext (with a 256 bit MAC)
-    let orig_msg = b"groceries: kaymac, ajvar, cream, diced onion, red pepper, grilled meat";
-    let mut msg_buf = *orig_msg;
-    tx.send_enc(&mut msg_buf, false);
-    let mut mac = [0u8; 32];
-    tx.send_mac(&mut mac, false);
-
-    // Rename for clarity. `msg_buf` has been encrypted in-place.
-    let mut ciphertext = msg_buf;
-
-    // Have the receiver receive the ciphertext and MAC
-    rx.recv_enc(ciphertext.as_mut_slice(), false);
-    let res = rx.recv_mac(&mac);
-
-    // Check that the MAC verifies
-    assert!(res.is_ok());
-    // Check that the decrypted ciphertext equals the original plaintext
-    let round_trip_msg = ciphertext;
-    assert_eq!(&round_trip_msg, orig_msg);
-}
+let mut rng = rand::rng();
+
+// Sender and receiver
+let mut tx = Strobe::new(b"correctnesstest", SecParam::B256);
+let mut rx = Strobe::new(b"correctnesstest", SecParam::B256);
+
+// Key both sides with a predetermined key
+let k = b"the-combination-on-my-luggage";
+tx.key(k, false);
+rx.key(k, false);
+
+// Have the transmitter sample and send a nonce (192 bits) in the clear
+let mut nonce = [0u8; 24];
+rng.fill_bytes(&mut nonce);
+rx.recv_clr(&nonce, false);
+tx.send_clr(&nonce, false);
+
+// Have the transmitter send an authenticated ciphertext (with a 256 bit MAC)
+let orig_msg = b"groceries: kaymac, ajvar, cream, diced onion, red pepper, grilled meat";
+let mut msg_buf = *orig_msg;
+tx.send_enc(&mut msg_buf, false);
+let mut mac = [0u8; 32];
+tx.send_mac(&mut mac, false);
+
+// Rename for clarity. `msg_buf` has been encrypted in-place.
+let mut ciphertext = msg_buf;
+
+// Have the receiver receive the ciphertext and MAC
+rx.recv_enc(ciphertext.as_mut_slice(), false);
+let res = rx.recv_mac(&mac);
+
+// Check that the MAC verifies
+assert!(res.is_ok());
+// Check that the decrypted ciphertext equals the original plaintext
+let round_trip_msg = ciphertext;
+assert_eq!(&round_trip_msg, orig_msg);
 ```
 
 Features
@@ -72,7 +69,7 @@ Feature flag list:
 
 * `asm` — Enables optimized assembly for the Keccak permutation, if available. Assembly currently only exists for ARMv8.
 * `serialize_secret_state` — Implements `serde`'s `Serialize` and `Deserialize` traits for the `Strobe` struct. **SECURITY NOTE**: Serializing Strobe state outputs security sensitive data that MUST be kept private. Treat the data as you would a private encryption/decryption key.
-* `std` — Required for running known-answer tests. Use only when testing.
+* `kat` — Required for running known-answer tests. Use only when testing.
 
 For info on how to omit or include feature flags, see the [cargo docs on features](https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html#choosing-features).
 
diff --git a/examples/basic.rs b/examples/basic.rs
index 8f734d4..92e103c 100644
--- a/examples/basic.rs
+++ b/examples/basic.rs
@@ -6,7 +6,7 @@ use rand::RngCore;
 // see the example at https://strobe.sourceforge.io/examples/aead/
 
 fn main() {
-    let mut rng = rand::thread_rng();
+    let mut rng = rand::rng();
 
     // Sender and receiver
     let mut tx = Strobe::new(b"correctnesstest", SecParam::B256);
diff --git a/src/basic_tests.rs b/src/basic_tests.rs
index 3cc7084..11dce8f 100644
--- a/src/basic_tests.rs
+++ b/src/basic_tests.rs
@@ -96,7 +96,7 @@ s.send_mac()
 
 print("[{}]".format(', '.join(map("0x{:02x}".format, s.st))))
 */
-#[cfg(feature = "std")]
+#[cfg(feature = "kat")]
 #[test]
 fn test_seq() {
     let mut s = Strobe::new(b"seqtest", SecParam::B256);
@@ -163,7 +163,7 @@ m += s.send_enc("pt", meta_flags=A|T|M, metadata="meta3")
 print("accumulated metadata == [{}]".format(', '.join(map("0x{:02x}".format, m))))
 print("state == [{}]".format(', '.join(map("0x{:02x}".format, s.st))))
 */
-#[cfg(feature = "std")]
+#[cfg(feature = "kat")]
 #[test]
 fn test_metadata() {
     // We will accumulate output over 3 operations and 3 meta-operations
@@ -310,7 +310,7 @@ fn test_long_inputs() {
 }
 
 // Test that streaming in data using the `more` flag works as expected
-#[cfg(feature = "std")]
+#[cfg(feature = "kat")]
 #[test]
 fn test_streaming_correctness() {
     // Compute a few things without breaking up their inputs
diff --git a/src/lib.rs b/src/lib.rs
index 3279c2a..8f58d7d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,12 +1,11 @@
-#![allow(clippy::needless_doctest_main)]
 #![doc = include_str!("../README.md")]
 // The doc_auto_cfg feature is only available in nightly. It auto-marks items in documentation as
 // dependent on specific features.
-#![cfg_attr(docsrs, feature(doc_auto_cfg))]
+#![cfg_attr(docsrs, feature(doc_cfg))]
 //-------- no_std stuff --------//
 #![no_std]
 
-#[cfg(all(test, feature = "std"))]
+#[cfg(all(test, feature = "kat"))]
 #[macro_use]
 extern crate std;
 
@@ -14,8 +13,7 @@ extern crate std;
 #[cfg(test)]
 mod basic_tests;
 
-// kat_tests requires std
-#[cfg(all(test, feature = "std"))]
+#[cfg(all(test, feature = "kat"))]
 mod kat_tests;
 
 //-------- Modules and exports--------//
diff --git a/src/strobe.rs b/src/strobe.rs
index 357574c..81fbeb4 100644
--- a/src/strobe.rs
+++ b/src/strobe.rs
@@ -90,20 +90,16 @@ impl core::fmt::Display for AuthError {
 /// ```rust
 /// # extern crate strobe_rs;
 /// # use strobe_rs::{SecParam, Strobe};
-/// # fn main() {
 /// # let mut s = Strobe::new(b"example-of-more", SecParam::B128);
 /// s.ad(b"hello world", false);
-/// # }
 /// ```
 /// is equivalent to
 /// ```rust
 /// # extern crate strobe_rs;
 /// # use strobe_rs::{SecParam, Strobe};
-/// # fn main() {
 /// # let mut s = Strobe::new(b"example-of-more", SecParam::B128);
 /// s.ad(b"hello ", false);
 /// s.ad(b"world", true);
-/// # }
 /// ```
 ///
 /// **NOTE:** If you try to set the `more` flag for an operation that is not preceded by the same
@@ -117,7 +113,7 @@ impl core::fmt::Display for AuthError {
 pub struct Strobe {
     /// Internal Keccak state
     pub(crate) st: AlignedKeccakState,
-    /// Security parameter (128 or 256)
+    /// Security parameter (128 or 256 bits)
     #[zeroize(skip)]
     sec: SecParam,
     /// This is the `R` parameter in the Strobe spec
@@ -199,9 +195,10 @@ impl Strobe {
         strobe
     }
 
-    /// Returns a bytestring of the form `Strobe-Keccak-SEC/B-vVER` where `SEC` is the bits of
-    /// security (128 or 256), `B` is the block size (in bits) of the Keccak permutation function,
-    /// and `VER` is the protocol version.
+    /// Returns a bytestring of the form `Strobe-Keccak-SEC/B-vVER` where `SEC` is the
+    /// bits of security (128 or 256), `B` is the block size (in bits) of the Keccak
+    /// permutation function (currently this can only be 1600), and `VER` is the protocol
+    /// version.
     pub fn version_str(&self) -> [u8; TEMPLATE_VERSION_STR.len()] {
         let mut buf = TEMPLATE_VERSION_STR;
 
@@ -515,7 +512,9 @@ impl Strobe {
         self.zero_state(num_bytes_to_zero);
     }
 
-    /// Ratchets the internal state forward in an irreversible way by zeroing bytes.
+    /// Ratchets the internal state forward in an irreversible way by zeroing bytes. If
+    /// the security parameter is 128, then `num_bytes_to_zero = 16` is sufficient. If
+    /// it's 256, then `num_bytes_to_zero = 32` is sufficient.
     ///
     /// Takes a `usize` argument specifying the number of bytes of public state to zero. If the
     /// size exceeds `self.rate`, Keccak-f will be called before more bytes are zeroed.