diff --git a/Cargo.lock b/Cargo.lock
index 5c019a43..19c28f67 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -89,6 +89,43 @@ version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "28c122c3980598d243d63d9a704629a2d748d101f278052ff068be5a4423ab6f"
 
+[[package]]
+name = "cpufeatures"
+version = "0.2.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a17b76ff3a4162b0b27f354a0c87015ddad39d35f9c0c36607a3bdd175dde1f1"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "crypto-bigint"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "740fe28e594155f10cfc383984cbefd529d7396050557148f79cb0f621204124"
+dependencies = [
+ "generic-array",
+ "rand_core",
+ "subtle",
+ "zeroize",
+]
+
+[[package]]
+name = "crypto-common"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1bfb12502f3fc46cca1bb51ac28df9d618d813cdc3d2f25b9fe775a34af26bb3"
+dependencies = [
+ "generic-array",
+ "typenum",
+]
+
+[[package]]
+name = "const-oid"
+version = "0.9.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28c122c3980598d243d63d9a704629a2d748d101f278052ff068be5a4423ab6f"
+
 [[package]]
 name = "cpufeatures"
 version = "0.2.11"
@@ -654,9 +691,9 @@ checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
 
 [[package]]
 name = "primeorder"
-version = "0.13.2"
+version = "0.13.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3c2fcef82c0ec6eefcc179b978446c399b3cdf73c392c35604e399eee6df1ee3"
+checksum = "c7dbe9ed3b56368bd99483eb32fe9c17fdd3730aebadc906918ce78d54c7eeb4"
 dependencies = [
  "elliptic-curve",
 ]
diff --git a/README.md b/README.md
index 43957a23..69cf8220 100644
--- a/README.md
+++ b/README.md
@@ -5,16 +5,42 @@
 
 # sev
 
-The `sev` crate provides an implementation of [AMD Secure Encrypted
-Virtualization (SEV)](https://developer.amd.com/sev/) APIs.
+The `sev` crate provides an implementation of the [AMD Secure Encrypted
+Virtualization (SEV)](https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/programmer-references/55766_SEV-KM_API_Specification.pdf) APIs and the [SEV Secure Nested Paging
+Firmware (SNP)] (https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/specifications/56860.pdf) ABIs.
+
+### SEV APIs
 
 The Linux kernel exposes two technically distinct AMD SEV APIs:
 
 1. An API for managing the SEV platform itself
 2. An API for managing SEV-enabled KVM virtual machines
 
-This crate implements both of those APIs and offers them to client
-code through a flexible and type-safe high level interface.
+This crate implements both of those APIs and offers them to client.
+code through a flexible and type-safe high-level interface.
+
+### SNP ABIs
+
+Like SEV, the Linux kernel exposes another two different AMD SEV-SNP ABIs:
+
+1. An ABI for managing the SEV-SNP platform itself
+2. An ABI for managing SEV-SNP enabled KVM virtual machines
+
+These new ABIs work only for **SEV-SNP** enabled hosts and guests.
+
+This crate implements APIs for both SEV and SEV-SNP management.
+
+### SEV and SEV-SNP enablement
+
+By default, both the SEV and SEV-SNP libraries are compiled.
+Because many modules provide support to both legacy SEV and SEV-SNP, they have been split into individual sub-modules `sev.rs` and `snp.rs`, isolating generation specific behavior.
+If desired, you may opt to exclude either of the sub-modules by disabling its feature in your project's `Cargo.toml`
+
+For example, to include the SEV APIs only:
+`sev = { version = "1.2.1", default-features = false, features = ["sev"] }`
+
+To include the SEV-SNP APIs only:
+`sev = { version = "1.2.1", default-features = false, features = ["snp"] }`
 
 ### Platform Management
 
diff --git a/src/lib.rs b/src/lib.rs
index 885e1e29..b227a257 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,15 +1,41 @@
 // SPDX-License-Identifier: Apache-2.0
 
-//! The `sev` crate provides an implementation of [AMD Secure Encrypted
-//! Virtualization (SEV)](https://developer.amd.com/sev/) APIs.
+//! The `sev` crate provides an implementation of the [AMD Secure Encrypted
+//! Virtualization (SEV)](https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/programmer-references/55766_SEV-KM_API_Specification.pdf) APIs and the [SEV Secure Nested Paging
+//! Firmware (SNP)] (https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/specifications/56860.pdf) ABIs.
+//!
+//! ## SEV APIs
 //!
 //! The Linux kernel exposes two technically distinct AMD SEV APIs:
 //!
 //! 1. An API for managing the SEV platform itself
 //! 2. An API for managing SEV-enabled KVM virtual machines
 //!
-//! This crate implements both of those APIs and offers them to client
-//! code through a flexible and type-safe high level interface.
+//! This crate implements both of those APIs and offers them to client.
+//! code through a flexible and type-safe high-level interface.
+//!
+//! ## SNP ABIs
+//!
+//! Like SEV, the Linux kernel exposes another two different AMD SEV-SNP ABIs:
+//!
+//! 1. An ABI for managing the SEV-SNP platform itself
+//! 2. An ABI for managing SEV-SNP enabled KVM virtual machines
+//!
+//! These new ABIs work only for **SEV-SNP** enabled hosts and guests.
+//!
+//! This crate implements APIs for both SEV and SEV-SNP management.
+//!
+//! ## SEV and SEV-SNP enablement
+//!
+//! By default, both the SEV and SEV-SNP libraries are compiled.
+//! Because many modules provide support to both legacy SEV and SEV-SNP, they have been split into individual sub-modules `sev.rs` and `snp.rs`, isolating generation specific behavior.
+//! If desired, you may opt to exclude either of the sub-modules by disabling its feature in your project's `Cargo.toml`  
+//!
+//! For example, to include the SEV APIs only:  
+//! `sev = { version = "1.2.1", default-features = false, features = ["sev"] }`  
+//!  
+//! To include the SEV-SNP APIs only:  
+//! `sev = { version = "1.2.1", default-features = false, features = ["snp"] }`  
 //!
 //! ## Platform Management
 //!