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RSA key length limit | Telit Cinterion IoT Developer Community

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bakos's picture
bakos

February 10, 2015 - 12:36am, 3487 views

Hi,

I'm considering to use a JAVA enabled Gemalto module for a project requiring SSL. It must be able to manage RSA key of at least 2048 bits. What is the size limit of RSA keys? Are they the same for all modules?

Regards,

Akos

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Bartłomiej Gemalto Moderator's picture
Bartłomiej Gema...
Feb 18 2015 - 1:18pm

Hello,

For EHSx and BGS5 modules for the RSA key a key size of 2048 is used.

The following cipher suites are available for HTTPSConnection and SecureConnection:

HTTP / SecureConnection over SSL version 3.0 and TLS versions 1.0, 1.1 and 1.2.

TLS_DHE_RSA_WITH_AES_256_CBC_SHA

TLS_DHE_RSA_WITH_AES_128_CBC_SHA

TLS_RSA_WITH_AES_256_CBC_SHA

TLS_RSA_WITH_AES_128_CBC_SHA

TLS_RSA_WITH_NULL_SHA

SSL_RSA_WITH_RC4_128_SHA

SSL_RSA_WITH_RC4_128_MD5

SSL_RSA_WITH_3DES_EDE_CBC_SHA

ECC cipher suites:

TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA

TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA

TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA

TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA

TLS_ECDHE_RSA_WITH_RC4_128_SHA

TLS_ECDHE_ECDSA_WITH_RC4_128_SHA

TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA

TLS_ECDHE_ECDSA_WITH_3DES_EDE_CBC_SHA

Static ECDH cipher suites:

TLS_ECDH_RSA_WITH_AES_256_CBC_SHA

TLS_ECDH_RSA_WITH_AES_128_CBC_SHA

TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA

TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA

TLS_ECDH_RSA_WITH_RC4_128_SHA

TLS_ECDH_ECDSA_WITH_RC4_128_SHA

TLS_ECDH_RSA_WITH_3DES_EDE_CBC_SHA

TLS_ECDH_ECDSA_WITH_3DES_EDE_CBC_SHA

CyaSSL extension - eSTREAM cipher suites:

TLS_RSA_WITH_HC_128_CBC_MD5

TLS_RSA_WITH_HC_128_CBC_SHA

TLS_RSA_WITH_RABBIT_CBC_SHA

SHA-256 cipher suites:

TLS_DHE_RSA_WITH_AES_256_CBC_SHA256

TLS_DHE_RSA_WITH_AES_128_CBC_SHA256

TLS_RSA_WITH_AES_256_CBC_SHA256

TLS_RSA_WITH_AES_128_CBC_SHA256

TLS_RSA_WITH_NULL_SHA256

AES-GCM cipher suites:

TLS_RSA_WITH_AES_128_GCM_SHA256

TLS_RSA_WITH_AES_256_GCM_SHA384

TLS_DHE_RSA_WITH_AES_128_GCM_SHA256

TLS_DHE_RSA_WITH_AES_256_GCM_SHA384

ECC AES-GCM cipher suites:

TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256

TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384

TLS_ECDH_ECDSA_WITH_AES_128_GCM_SHA256

TLS_ECDH_ECDSA_WITH_AES_256_GCM_SHA384

TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256

TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384

TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256

TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384

AES-CCM cipher suites:

TLS_RSA_WITH_AES_128_CCM_8_SHA256

TLS_RSA_WITH_AES_256_CCM_8_SHA384

TLS_ECDHE_ECDSA_WITH_AES_128_CCM_8_SHA256

TLS_ECDHE_ECDSA_WITH_AES_256_CCM_8_SHA384

Please see Java User's Guide under this link for more information:

https://iot-developer.thalesgroup.com/documentation/cinterion%C2%AE-conc...

Regards,

Bartłomiej