1 files changed, 4 insertions, 0 deletions
diff --git a/ripemd.h b/ripemd.h
index e1f5081f..b5fbb4ae 100644
--- a/ripemd.h
+++ b/ripemd.h
@@ -13,6 +13,7 @@ NAMESPACE_BEGIN(CryptoPP)
 /// \brief RIPEMD-160 message digest
 /// \details Digest size is 160-bits.
 /// \sa <a href="http://www.weidai.com/scan-mirror/md.html#RIPEMD-160">RIPEMD-160</a>
+/// \since Crypto++ 2.1
 class RIPEMD160 : public IteratedHashWithStaticTransform<word32, LittleEndian, 64, 20, RIPEMD160>
 {
 public:
@@ -24,6 +25,7 @@ public:
 /// \brief RIPEMD-320 message digest
 /// \details Digest size is 320-bits.
 /// \sa <a href="http://www.weidai.com/scan-mirror/md.html#RIPEMD-320">RIPEMD-320</a>
+/// \since Crypto++ 2.1
 class RIPEMD320 : public IteratedHashWithStaticTransform<word32, LittleEndian, 64, 40, RIPEMD320>
 {
 public:
@@ -36,6 +38,7 @@ public:
 /// \details Digest size is 128-bits.
 /// \warning RIPEMD-128 is considered insecure, and should not be used unless you absolutely need it for compatibility.
 /// \sa <a href="http://www.weidai.com/scan-mirror/md.html#RIPEMD-128">RIPEMD-128</a>
+/// \since Crypto++ 2.1
 class RIPEMD128 : public IteratedHashWithStaticTransform<word32, LittleEndian, 64, 16, RIPEMD128>
 {
 public:
@@ -48,6 +51,7 @@ public:
 /// \details Digest size is 256-bits.
 /// \warning RIPEMD-256 is considered insecure, and should not be used unless you absolutely need it for compatibility.
 /// \sa <a href="http://www.weidai.com/scan-mirror/md.html#RIPEMD-256">RIPEMD-256</a>
+/// \since Crypto++ 2.1
 class RIPEMD256 : public IteratedHashWithStaticTransform<word32, LittleEndian, 64, 32, RIPEMD256>
 {
 public: