diff --git a/cryptostream/crypto_stream_chacha20.go b/cryptostream/crypto_stream_chacha20.go
index 4b75577..06de21e 100644
--- a/cryptostream/crypto_stream_chacha20.go
+++ b/cryptostream/crypto_stream_chacha20.go
@@ -57,17 +57,14 @@ func CryptoStreamChaCha20XORIC(m []byte, n []byte, ic uint64, k []byte) ([]byte,
 	return c, exit
 }
 
-// Requires 1.0.12
-//func CryptoStreamChaCha20Keygen() []byte {
-//	c := make([]byte, CryptoStreamChaCha20KeyBytes())
-//	C.crypto_stream_chacha20_keygen((*C.uchar)(&c[0]))
-//	return c
-//}
+func CryptoStreamChaCha20Keygen() []byte {
+	c := make([]byte, CryptoStreamChaCha20KeyBytes())
+	C.crypto_stream_chacha20_keygen((*C.uchar)(&c[0]))
+	return c
+}
 
 func CryptoStreamChaCha20IETFKeyBytes() int {
-	// Requires 1.0.12
-	// return int(C.crypto_stream_chacha20_ietf_keybytes())
-	return CryptoStreamChaCha20KeyBytes()
+	return int(C.crypto_stream_chacha20_ietf_keybytes())
 }
 
 func CryptoStreamChaCha20IETFNonceBytes() int {
@@ -117,9 +114,8 @@ func CryptoStreamChaCha20IETFXORIC(m []byte, n []byte, ic uint32, k []byte) ([]b
 	return c, exit
 }
 
-// Requires 1.0.12
-//func CryptoStreamChaCha20IETFKeygen() []byte {
-//	c := make([]byte, CryptoStreamChaCha20IETFKeyBytes())
-//	C.crypto_stream_chacha20_ietf_keygen((*C.uchar)(&c[0]))
-//	return c
-//}
+func CryptoStreamChaCha20IETFKeygen() []byte {
+	c := make([]byte, CryptoStreamChaCha20IETFKeyBytes())
+	C.crypto_stream_chacha20_ietf_keygen((*C.uchar)(&c[0]))
+	return c
+}
diff --git a/cryptostream/crypto_stream_salsa20.go b/cryptostream/crypto_stream_salsa20.go
index b373218..270574f 100644
--- a/cryptostream/crypto_stream_salsa20.go
+++ b/cryptostream/crypto_stream_salsa20.go
@@ -57,9 +57,8 @@ func CryptoStreamSalsa20XORIC(m []byte, n []byte, ic uint64, k []byte) ([]byte,
 	return c, exit
 }
 
-// Requires 1.0.12
-//func CryptoStreamSalsa20Keygen() []byte {
-//	c := make([]byte, CryptoStreamSalsa20KeyBytes())
-//	C.crypto_stream_salsa20_keygen((*C.uchar)(&c[0]))
-//	return c
-//}
+func CryptoStreamSalsa20Keygen() []byte {
+	c := make([]byte, CryptoStreamSalsa20KeyBytes())
+	C.crypto_stream_salsa20_keygen((*C.uchar)(&c[0]))
+	return c
+}
diff --git a/cryptostream/crypto_stream_salsa2012.go b/cryptostream/crypto_stream_salsa2012.go
index c69ae41..30a07ac 100644
--- a/cryptostream/crypto_stream_salsa2012.go
+++ b/cryptostream/crypto_stream_salsa2012.go
@@ -41,9 +41,8 @@ func CryptoStreamSalsa2012XOR(m []byte, n []byte, k []byte) ([]byte, int) {
 	return c, exit
 }
 
-// Requires 1.0.12
-//func CryptoStreamSalsa2012Keygen() []byte {
-//	c := make([]byte, CryptoStreamSalsa2012KeyBytes())
-//	C.crypto_stream_salsa2012_keygen((*C.uchar)(&c[0]))
-//	return c
-//}
+func CryptoStreamSalsa2012Keygen() []byte {
+	c := make([]byte, CryptoStreamSalsa2012KeyBytes())
+	C.crypto_stream_salsa2012_keygen((*C.uchar)(&c[0]))
+	return c
+}
diff --git a/cryptostream/crypto_stream_salsa208.go b/cryptostream/crypto_stream_salsa208.go
index 69ec827..02ad510 100644
--- a/cryptostream/crypto_stream_salsa208.go
+++ b/cryptostream/crypto_stream_salsa208.go
@@ -41,9 +41,8 @@ func CryptoStreamSalsa208XOR(m []byte, n []byte, k []byte) ([]byte, int) {
 	return c, exit
 }
 
-// Requires 1.0.12
-//func CryptoStreamSalsa208Keygen() []byte {
-//	c := make([]byte, CryptoStreamSalsa208KeyBytes())
-//	C.crypto_stream_salsa208_keygen((*C.uchar)(&c[0]))
-//	return c
-//}
+func CryptoStreamSalsa208Keygen() []byte {
+	c := make([]byte, CryptoStreamSalsa208KeyBytes())
+	C.crypto_stream_salsa208_keygen((*C.uchar)(&c[0]))
+	return c
+}
diff --git a/cryptostream/crypto_stream_xchacha20.go b/cryptostream/crypto_stream_xchacha20.go
new file mode 100644
index 0000000..d9b9609
--- /dev/null
+++ b/cryptostream/crypto_stream_xchacha20.go
@@ -0,0 +1,64 @@
+package cryptostream
+
+// #cgo pkg-config: libsodium
+// #include <stdlib.h>
+// #include <sodium.h>
+import "C"
+import "github.com/GoKillers/libsodium-go/support"
+
+func CryptoStreamXChaCha20KeyBytes() int {
+	return int(C.crypto_stream_xchacha20_keybytes())
+}
+
+func CryptoStreamXChaCha20NonceBytes() int {
+	return int(C.crypto_stream_xchacha20_noncebytes())
+}
+
+func CryptoStreamXChaCha20(clen int, n []byte, k []byte) ([]byte, int) {
+	support.CheckSize(n, CryptoStreamXChaCha20NonceBytes(), "nonce")
+	support.CheckSize(k, CryptoStreamXChaCha20KeyBytes(), "key")
+	c := make([]byte, clen)
+	exit := int(C.crypto_stream_xchacha20(
+		(*C.uchar)(&c[0]),
+		(C.ulonglong)(clen),
+		(*C.uchar)(&n[0]),
+		(*C.uchar)(&k[0])))
+
+	return c, exit
+}
+
+func CryptoStreamXChaCha20XOR(m []byte, n []byte, k []byte) ([]byte, int) {
+	support.CheckSize(n, CryptoStreamXChaCha20NonceBytes(), "nonce")
+	support.CheckSize(k, CryptoStreamXChaCha20KeyBytes(), "key")
+	c := make([]byte, len(m))
+	exit := int(C.crypto_stream_xchacha20_xor(
+		(*C.uchar)(&c[0]),
+		(*C.uchar)(&m[0]),
+		(C.ulonglong)(len(m)),
+		(*C.uchar)(&n[0]),
+		(*C.uchar)(&k[0])))
+
+	return c, exit
+}
+
+func CryptoStreamXChaCha20XORIC(m []byte, n []byte, ic uint64, k []byte) ([]byte, int) {
+	support.CheckSize(n, CryptoStreamXChaCha20NonceBytes(), "nonce")
+	support.CheckSize(k, CryptoStreamXChaCha20KeyBytes(), "key")
+
+	c := make([]byte, len(m))
+	exit := int(C.crypto_stream_xchacha20_xor_ic(
+		(*C.uchar)(&c[0]),
+		(*C.uchar)(&m[0]),
+		(C.ulonglong)(len(m)),
+		(*C.uchar)(&n[0]),
+		(C.uint64_t)(ic),
+		(*C.uchar)(&k[0])))
+
+	return c, exit
+}
+
+func CryptoStreamXChaCha20Keygen() []byte {
+	c := make([]byte, CryptoStreamXChaCha20KeyBytes())
+	C.crypto_stream_xchacha20_keygen((*C.uchar)(&c[0]))
+	return c
+}
diff --git a/cryptostream/crypto_stream_xsalsa20.go b/cryptostream/crypto_stream_xsalsa20.go
index 4ab01b9..193319d 100644
--- a/cryptostream/crypto_stream_xsalsa20.go
+++ b/cryptostream/crypto_stream_xsalsa20.go
@@ -57,9 +57,8 @@ func CryptoStreamXSalsa20XORIC(m []byte, n []byte, ic uint64, k []byte) ([]byte,
 	return c, exit
 }
 
-// Requires 1.0.12
-//func CryptoStreamXSalsa20Keygen() []byte {
-//	c := make([]byte, CryptoStreamXSalsa20KeyBytes())
-//	C.crypto_stream_xsalsa20_keygen((*C.uchar)(&c[0]))
-//	return c
-//}
+func CryptoStreamXSalsa20Keygen() []byte {
+	c := make([]byte, CryptoStreamXSalsa20KeyBytes())
+	C.crypto_stream_xsalsa20_keygen((*C.uchar)(&c[0]))
+	return c
+}
diff --git a/sodium/version.go b/sodium/version.go
index 5360aef..14bc225 100644
--- a/sodium/version.go
+++ b/sodium/version.go
@@ -16,3 +16,7 @@ func SodiumLibaryVersionMajor() int {
 func SodiumLibaryVersionMinor() int {
 	return int(C.sodium_library_version_minor())
 }
+
+func SodiumLibaryMinimal() bool {
+	return int(C.sodium_library_minimal()) != 0
+}
\ No newline at end of file