Secure time-to-live
    2.
    发明授权

    公开(公告)号:US10567349B2

    公开(公告)日:2020-02-18

    申请号:US14314018

    申请日:2014-06-24

    Applicant: Wickr Inc.

    Abstract: Determining whether to allow access to a message is disclosed. A message is received from a sender. The message is associated with a first time-to-live (TTL) value. A determination is made that the first time-to-live value has not been exceeded. The determination is made at least in part by obtaining an external master clock time. In response to the determination, access is allowed to the message.

    Key management and dynamic perfect forward secrecy

    公开(公告)号:US10382197B1

    公开(公告)日:2019-08-13

    申请号:US15240981

    申请日:2016-08-18

    Applicant: Wickr Inc.

    Abstract: A first public key associated with a first recipient is requested from a server. The first public key is received, as is an associated first key reference value. The first public key is used in conjunction with securing a first message. The first public key is destroyed. A second public key associated with the first recipient is requested from the server. A second public key and an associated second key reference value are received. The second public key is different from the first public key and the first key reference value is different from the second key reference value. The second public key is used in conjunction with the securing of a second message and the second public key is destroyed.

    Secure time-to-live
    4.
    发明授权

    公开(公告)号:US10263964B2

    公开(公告)日:2019-04-16

    申请号:US15964848

    申请日:2018-04-27

    Applicant: Wickr Inc.

    Abstract: Determining whether to allow access to a message is disclosed. A message is received from a sender. The message is associated with a first time-to-live (TTL) value. A determination is made that the first time-to-live value has not been exceeded. The determination is made at least in part by obtaining an external master clock time. In response to the determination, access is allowed to the message.

    Discouraging screen capture
    5.
    发明授权

    公开(公告)号:US10248799B1

    公开(公告)日:2019-04-02

    申请号:US14839845

    申请日:2015-08-28

    Applicant: Wickr Inc.

    Abstract: Screen capture mitigation is disclosed. A first finger of a user is detected in a first designated region of a display. Content is displayed when the first finger is detected in the first designated region of the display. Periodically, a determination is made whether the first finger is detected in the first designated region of the display. The content is ceased to be displayed in response to a determination that the first finger is outside the first designated region of the display.

    Secure directory services
    8.
    发明授权

    公开(公告)号:US10944713B1

    公开(公告)日:2021-03-09

    申请号:US15988228

    申请日:2018-05-24

    Applicant: Wickr Inc.

    Abstract: Secure directory services are disclosed. A cryptographic hash of a foreign identifier associated with a potential user is received. A determination is made that the received cryptographic hash of the foreign identifier matches a representation of a stored entry. In response to the determination, a transmission of a representation of a native identifier associated with the stored entry is transmitted to the sender of the cryptographic hash of the foreign identifier.

    Digital security bubble
    9.
    发明授权

    公开(公告)号:US10581817B1

    公开(公告)日:2020-03-03

    申请号:US15905242

    申请日:2018-02-26

    Applicant: Wickr Inc.

    Abstract: A digital security bubble encapsulation is disclosed. A public key and a device identifier of at least one recipient is requested from a first server. A message containing one or more components is encrypted using a symmetric key. The symmetric key is encrypted with a public key received in response to the request. The encrypted message, the encrypted symmetric key, and the device identifier are encapsulated in a digital security bubble encapsulation. The digital security bubble encapsulation is transmitted to a second server.

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