I would like to do the similar encryption in the iOS
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
RSAPublicKeySpec pubKeySpec = new RSAPublicKeySpec(modulus, pubExp);
RSAPublicKey key = (RSAPublicKey) keyFactory.generatePublic(pubKeySpec);
Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");
byte cipherData = cipher.doFinal(value.getBytes());
strEncryInfoData = new String(org.apache.commons.codec.binary.Base64.encodeBase64(cipherData));
You should look at the CryptoCompatibility sample code, which shows how to do various forms of encryption in a way that’s compatible with other common crypto toolkits.
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