python3-rsa: Upgrade 4.6 -> 4.7

Upgrade to release 4.7:

- Fix: CVE-2020-25658 - Bleichenbacher-style timing oracle in
  PKCS#1 v1.5 decryption code
- Add padding length check as described by PKCS#1 v1.5
- Reuse of blinding factors to speed up blinding operations
- Declare & test support for Python 3.9

Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>
Acked-by: Trevor Gamblin <trevor.gamblin@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-python/recipes-devtools/python/python3-rsa_4.7.bb

@@ -0,0 +1,40 @@
+SUMMARY = "Pure-Python RSA implementation"
+SECTION = "devel/python"
+AUTHOR = "Sybren A. Stuvel"
+LICENSE = "Apache-2.0"
+LIC_FILES_CHKSUM = "file://LICENSE;md5=c403f6882d4f97a9cd927df987d55634"
+
+SRC_URI[sha256sum] = "69805d6b69f56eb05b62daea3a7dbd7aa44324ad1306445e05da8060232d00f4"
+
+inherit pypi setuptools3 update-alternatives
+
+ALTERNATIVE_${PN} = "\
+    pyrsa-decrypt \
+    pyrsa-encrypt \
+    pyrsa-keygen \
+    pyrsa-priv2pub \
+    pyrsa-sign \
+    pyrsa-verify \
+"
+
+ALTERNATIVE_LINK_NAME[pyrsa-decrypt] = "${bindir}/pyrsa-decrypt"
+ALTERNATIVE_LINK_NAME[pyrsa-encrypt] = "${bindir}/pyrsa-encrypt"
+ALTERNATIVE_LINK_NAME[pyrsa-keygen] = "${bindir}/pyrsa-keygen"
+ALTERNATIVE_LINK_NAME[pyrsa-priv2pub] = "${bindir}/pyrsa-priv2pub"
+ALTERNATIVE_LINK_NAME[pyrsa-sign] = "${bindir}/pyrsa-sign"
+ALTERNATIVE_LINK_NAME[pyrsa-verify] = "${bindir}/pyrsa-verify"
+ALTERNATIVE_PRIORITY = "30"
+
+
+RDEPENDS_${PN} += "\
+    ${PYTHON_PN}-compression \
+    ${PYTHON_PN}-crypt \
+    ${PYTHON_PN}-doctest \
+    ${PYTHON_PN}-logging \
+    ${PYTHON_PN}-math \
+    ${PYTHON_PN}-multiprocessing \
+    ${PYTHON_PN}-netclient \
+    ${PYTHON_PN}-pickle \
+"
+
+RDEPENDS_${PN} += "${PYTHON_PN}-pyasn1"