RSA Key generation with SecKey Xamarin.iOS
I'm trying to generate a public (and private) key pair using the SecKey class from Xamarin.iOS.
The KeySize is defined to 1024 bit and this seems to work (if I change this value, the length of the result array is changing too).
I generate the keys with
SecKey.GenerateKeyPair(CreateRsaParams(), out publicKey, out privateKey);
byte key = publicKey.GetExternalRepresentation().ToArray()
(CreateRsaParams() is a function giving back a NSDictionary with the required data)
The problem is: I get a byte array (public key) with 140 Bytes - but depended on the key size it should have only 128 Byte - and I need a 128 Byte public key for data exchange with an other system
(by the way - using PCLCrypto is not an option for me since the project is not allowed to use this 3rd party component)
Does anyone know the problem and know a solution?
ios xamarin rsa public-key
asked Nov 22 '18 at 10:21
PeterPeter
1
add a comment |
I'm trying to generate a public (and private) key pair using the SecKey class from Xamarin.iOS.
The KeySize is defined to 1024 bit and this seems to work (if I change this value, the length of the result array is changing too).
I generate the keys with
SecKey.GenerateKeyPair(CreateRsaParams(), out publicKey, out privateKey);
byte key = publicKey.GetExternalRepresentation().ToArray()
(CreateRsaParams() is a function giving back a NSDictionary with the required data)
The problem is: I get a byte array (public key) with 140 Bytes - but depended on the key size it should have only 128 Byte - and I need a 128 Byte public key for data exchange with an other system
(by the way - using PCLCrypto is not an option for me since the project is not allowed to use this 3rd party component)
Does anyone know the problem and know a solution?
ios xamarin rsa public-key
asked Nov 22 '18 at 10:21
PeterPeter
1
Refer this blog msicc.net/tag/rsa
– Lucas Zhang - MSFT
Nov 23 '18 at 2:55
Thanks Lucas for the link. I already used most of the code from this blog. Now I changed completely to this code and use the key chain - but the result is the same 140 byte key. So the problem isn't solved.
– Peter
Nov 23 '18 at 10:32
add a comment |
I'm trying to generate a public (and private) key pair using the SecKey class from Xamarin.iOS.
The KeySize is defined to 1024 bit and this seems to work (if I change this value, the length of the result array is changing too).
I generate the keys with
SecKey.GenerateKeyPair(CreateRsaParams(), out publicKey, out privateKey);
byte key = publicKey.GetExternalRepresentation().ToArray()
(CreateRsaParams() is a function giving back a NSDictionary with the required data)
The problem is: I get a byte array (public key) with 140 Bytes - but depended on the key size it should have only 128 Byte - and I need a 128 Byte public key for data exchange with an other system
(by the way - using PCLCrypto is not an option for me since the project is not allowed to use this 3rd party component)
Does anyone know the problem and know a solution?
ios xamarin rsa public-key
asked Nov 22 '18 at 10:21
PeterPeter
1
I'm trying to generate a public (and private) key pair using the SecKey class from Xamarin.iOS.
The KeySize is defined to 1024 bit and this seems to work (if I change this value, the length of the result array is changing too).
I generate the keys with
SecKey.GenerateKeyPair(CreateRsaParams(), out publicKey, out privateKey);
byte key = publicKey.GetExternalRepresentation().ToArray()
(CreateRsaParams() is a function giving back a NSDictionary with the required data)
The problem is: I get a byte array (public key) with 140 Bytes - but depended on the key size it should have only 128 Byte - and I need a 128 Byte public key for data exchange with an other system
(by the way - using PCLCrypto is not an option for me since the project is not allowed to use this 3rd party component)
Does anyone know the problem and know a solution?
ios xamarin rsa public-key
ios xamarin rsa public-key
asked Nov 22 '18 at 10:21
PeterPeter
1
asked Nov 22 '18 at 10:21
PeterPeter
1
asked Nov 22 '18 at 10:21
PeterPeter
1
asked Nov 22 '18 at 10:21
PeterPeter
1
asked Nov 22 '18 at 10:21
PeterPeter
1
1
Refer this blog msicc.net/tag/rsa
– Lucas Zhang - MSFT
Nov 23 '18 at 2:55
Thanks Lucas for the link. I already used most of the code from this blog. Now I changed completely to this code and use the key chain - but the result is the same 140 byte key. So the problem isn't solved.
– Peter
Nov 23 '18 at 10:32
add a comment |
Refer this blog msicc.net/tag/rsa
– Lucas Zhang - MSFT
Nov 23 '18 at 2:55
Thanks Lucas for the link. I already used most of the code from this blog. Now I changed completely to this code and use the key chain - but the result is the same 140 byte key. So the problem isn't solved.
– Peter
Nov 23 '18 at 10:32
Refer this blog msicc.net/tag/rsa
– Lucas Zhang - MSFT
Nov 23 '18 at 2:55
Refer this blog msicc.net/tag/rsa
– Lucas Zhang - MSFT
Nov 23 '18 at 2:55
Thanks Lucas for the link. I already used most of the code from this blog. Now I changed completely to this code and use the key chain - but the result is the same 140 byte key. So the problem isn't solved.
– Peter
Nov 23 '18 at 10:32
Thanks Lucas for the link. I already used most of the code from this blog. Now I changed completely to this code and use the key chain - but the result is the same 140 byte key. So the problem isn't solved.
– Peter
Nov 23 '18 at 10:32
add a comment |
1 Answer
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oldest
votes
Okay, problem solved.
If anyone is facing the same problem, you can find the solution at
https://forums.developer.apple.com/thread/111109
The problem was not the key, but the wrongly formulated requirement.
answered Nov 28 '18 at 13:14
PeterPeter
1
add a comment |
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Okay, problem solved.
If anyone is facing the same problem, you can find the solution at
https://forums.developer.apple.com/thread/111109
The problem was not the key, but the wrongly formulated requirement.
answered Nov 28 '18 at 13:14
PeterPeter
1
add a comment |
Okay, problem solved.
If anyone is facing the same problem, you can find the solution at
https://forums.developer.apple.com/thread/111109
The problem was not the key, but the wrongly formulated requirement.
answered Nov 28 '18 at 13:14
PeterPeter
1
add a comment |
Okay, problem solved.
If anyone is facing the same problem, you can find the solution at
https://forums.developer.apple.com/thread/111109
The problem was not the key, but the wrongly formulated requirement.
answered Nov 28 '18 at 13:14
PeterPeter
1
Okay, problem solved.
If anyone is facing the same problem, you can find the solution at
https://forums.developer.apple.com/thread/111109
The problem was not the key, but the wrongly formulated requirement.
answered Nov 28 '18 at 13:14
PeterPeter
1
answered Nov 28 '18 at 13:14
PeterPeter
1
answered Nov 28 '18 at 13:14
PeterPeter
1
answered Nov 28 '18 at 13:14
PeterPeter
1
1
add a comment |
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Refer this blog msicc.net/tag/rsa
– Lucas Zhang - MSFT
Nov 23 '18 at 2:55
Thanks Lucas for the link. I already used most of the code from this blog. Now I changed completely to this code and use the key chain - but the result is the same 140 byte key. So the problem isn't solved.
– Peter
Nov 23 '18 at 10:32