diff --git a/Cargo.lock b/Cargo.lock
index c88e1cf7337e38952cd441e5bf3fa2f9e93d558a..0a723e77921f47a2a7a846130b5998bbe925b993 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -173,6 +173,21 @@ dependencies = [
  "generic-array",
 ]
 
+[[package]]
+name = "botan"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "066638d2456fe30d12c06c35ee0eb4f050c97ed3b68db0bff9b762da1976d169"
+dependencies = [
+ "botan-sys",
+]
+
+[[package]]
+name = "botan-sys"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cc0393ee6e938f1d845b0b7163b66f8ac93383a8a20aa64731ce04e5f59319fe"
+
 [[package]]
 name = "buffered-reader"
 version = "1.1.4"
@@ -1276,6 +1291,7 @@ checksum = "e5f5aa2f8ea2ab9690c2839a16f7bf335f404fa97fad627c8e828b302b1a5c18"
 dependencies = [
  "anyhow",
  "base64",
+ "botan",
  "buffered-reader",
  "bzip2",
  "chrono",
diff --git a/Cargo.toml b/Cargo.toml
index caa768d5789dfd17fd645580ec7df600354fb122..6a42aeef78de790c40ab120d6f3512d962bdface 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -42,4 +42,5 @@ default = [
     "sequoia-openpgp/default",
 ]
 crypto-nettle = ["sequoia-openpgp/crypto-nettle"]
+crypto-botan = ["sequoia-openpgp/crypto-botan"]
 crypto-cng = ["sequoia-openpgp/crypto-cng"]