1 files changed, 48 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/ellipticcurve/signature.py b/.venv/lib/python3.12/site-packages/ellipticcurve/signature.py
new file mode 100644
index 00000000..3084f8f8
--- /dev/null
+++ b/.venv/lib/python3.12/site-packages/ellipticcurve/signature.py
@@ -0,0 +1,48 @@
+from .utils.compatibility import *
+from .utils.der import parse, encodeConstructed, encodePrimitive, DerFieldType
+from .utils.binary import hexFromByteString, byteStringFromHex, base64FromByteString, byteStringFromBase64
+
+
+class Signature:
+
+    def __init__(self, r, s, recoveryId=None):
+        self.r = r
+        self.s = s
+        self.recoveryId = recoveryId
+
+    def toDer(self, withRecoveryId=False):
+        hexadecimal = self._toString()
+        encodedSequence = byteStringFromHex(hexadecimal)
+        if not withRecoveryId:
+            return encodedSequence
+        return toBytes(chr(27 + self.recoveryId)) + encodedSequence
+
+    def toBase64(self, withRecoveryId=False):
+        return base64FromByteString(self.toDer(withRecoveryId))
+
+    @classmethod
+    def fromDer(cls, string, recoveryByte=False):
+        recoveryId = None
+        if recoveryByte:
+            recoveryId = string[0] if isinstance(string[0], intTypes) else ord(string[0])
+            recoveryId -= 27
+            string = string[1:]
+
+        hexadecimal = hexFromByteString(string)
+        return cls._fromString(string=hexadecimal, recoveryId=recoveryId)
+
+    @classmethod
+    def fromBase64(cls, string, recoveryByte=False):
+        der = byteStringFromBase64(string)
+        return cls.fromDer(der, recoveryByte)
+
+    def _toString(self):
+        return encodeConstructed(
+            encodePrimitive(DerFieldType.integer, self.r),
+            encodePrimitive(DerFieldType.integer, self.s),
+        )
+
+    @classmethod
+    def _fromString(cls, string, recoveryId=None):
+        r, s = parse(string)[0]
+        return Signature(r=r, s=s, recoveryId=recoveryId)