[修改] 增加freeRTOS

1. 版本FreeRTOSv202212.01，命名为kernel；

kernel/FreeRTOS-Plus/ThirdParty/wolfSSL/swig/rsasign.py

@@ -0,0 +1,35 @@
+# file: rsasign.py
+
+import wolfssl
+
+
+# start Random Number Generator
+rng = wolfssl.GetRng()
+if rng == None:
+    print "Couldn't get an RNG"
+    exit(-1)
+
+# load RSA private key in DER format
+key = wolfssl.GetRsaPrivateKey("../certs/client-key.der")
+if key == None:
+    print "Couldn't load DER private key file"
+    exit(-1)
+
+# Make byte Arrays and fill input
+signOutput = wolfssl.byteArray(128)   # 128 allows 1024 bit private key
+signStr    = wolfssl.byteArray(25)    # input can't be larger then key size
+                                     # 64 for 512 bit 128 for 1024 bit
+wolfssl.FillSignStr(signStr, "Everybody gets Friday off", 25)
+
+# Do RSA Sign
+signedSize = wolfssl.RsaSSL_Sign(signStr, 25, signOutput, 128, key, rng)
+
+# Show output
+print "Signed Size = ", signedSize, " signed array = ", wolfssl.cdata(signOutput, signedSize)
+
+# let's verify this worked
+signVerify = wolfssl.byteArray(signedSize)
+verifySize = wolfssl.RsaSSL_Verify(signOutput, signedSize, signVerify, signedSize, key)
+
+print "Verify Size = ", verifySize, " verify array = ", wolfssl.cdata(signVerify, verifySize)
+